diff --git a/pyhmy/__init__.py b/pyhmy/__init__.py
index 5aefb14..ebdebee 100644
--- a/pyhmy/__init__.py
+++ b/pyhmy/__init__.py
@@ -3,28 +3,16 @@ import warnings
 
 from ._version import __version__
 
-from .util import (
-    Typgpy,
-    get_gopath,
-    get_goversion,
-    get_bls_build_variables,
-    json_load
-)
+from .util import Typgpy, get_gopath, get_goversion, get_bls_build_variables, json_load
 
 if sys.version_info.major < 3:
     warnings.simplefilter("always", DeprecationWarning)
     warnings.warn(
-        DeprecationWarning(
-            "`pyhmy` does not support Python 2. Please use Python 3."
-        )
+        DeprecationWarning("`pyhmy` does not support Python 2. Please use Python 3.")
     )
     warnings.resetwarnings()
 
-if sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
+if sys.platform.startswith("win32") or sys.platform.startswith("cygwin"):
     warnings.simplefilter("always", ImportWarning)
-    warnings.warn(
-        ImportWarning(
-            "`pyhmy` does not work on Windows or Cygwin."
-        )
-    )
+    warnings.warn(ImportWarning("`pyhmy` does not work on Windows or Cygwin."))
     warnings.resetwarnings()
diff --git a/pyhmy/_version.py b/pyhmy/_version.py
index 09a940e..dc1891a 100644
--- a/pyhmy/_version.py
+++ b/pyhmy/_version.py
@@ -7,5 +7,5 @@ Provides pyhmy version information.
 
 from incremental import Version
 
-__version__ = Version('pyhmy', 20, 5, 20)
+__version__ = Version("pyhmy", 20, 5, 20)
 __all__ = ["__version__"]
diff --git a/pyhmy/account.py b/pyhmy/account.py
index 60c0494..5c53b3b 100644
--- a/pyhmy/account.py
+++ b/pyhmy/account.py
@@ -1,26 +1,14 @@
-from .rpc.request import (
-    rpc_request
-)
+from .rpc.request import rpc_request
 
-from .rpc.exceptions import (
-    RPCError,
-    RequestsError,
-    RequestsTimeoutError
-)
+from .rpc.exceptions import RPCError, RequestsError, RequestsTimeoutError
 
-from .exceptions import (
-    InvalidRPCReplyError
-)
+from .exceptions import InvalidRPCReplyError
 
-from .blockchain import (
-    get_sharding_structure
-)
+from .blockchain import get_sharding_structure
 
-from .bech32.bech32 import (
-    bech32_decode
-)
+from .bech32.bech32 import bech32_decode
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 _address_length = 42
 
@@ -40,13 +28,14 @@ def is_valid_address(address) -> bool:
     bool
         Is valid address
     """
-    if not address.startswith('one1'):
+    if not address.startswith("one1"):
         return False
     hrp, _ = bech32_decode(address)
     if not hrp:
         return False
     return True
 
+
 def get_balance(address, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get current account balance
@@ -74,17 +63,20 @@ def get_balance(address, endpoint=_default_endpoint, timeout=_default_timeout) -
     -------------
     https://api.hmny.io/#da8901d2-d237-4c3b-9d7d-10af9def05c4
     """
-    method = 'hmyv2_getBalance'
-    params = [
-        address
-    ]
+    method = "hmyv2_getBalance"
+    params = [address]
     try:
-        balance = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
-        return int(balance)     # v2 returns the result as it is
-    except TypeError as e:      # check will work if rpc returns None
+        balance = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )["result"]
+        return int(balance)  # v2 returns the result as it is
+    except TypeError as e:  # check will work if rpc returns None
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_balance_by_block(address, block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_balance_by_block(
+    address, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get account balance for address at a given block number
 
@@ -114,18 +106,20 @@ def get_balance_by_block(address, block_num, endpoint=_default_endpoint, timeout
     https://api.hmny.io/#9aeae4b8-1a09-4ed2-956b-d7c96266dd33
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/rpc/blockchain.go#L92
     """
-    method = 'hmyv2_getBalanceByBlockNumber'
-    params = [
-        address,
-        block_num
-    ]
+    method = "hmyv2_getBalanceByBlockNumber"
+    params = [address, block_num]
     try:
-        balance = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        balance = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )["result"]
         return int(balance)
     except TypeError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_account_nonce(address, block_num='latest', endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_account_nonce(
+    address, block_num="latest", endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the account nonce
 
@@ -154,24 +148,29 @@ def get_account_nonce(address, block_num='latest', endpoint=_default_endpoint, t
     -------------
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/rpc/transaction.go#L51
     """
-    method = 'hmyv2_getAccountNonce'
-    params = [
-        address,
-        block_num
-    ]
+    method = "hmyv2_getAccountNonce"
+    params = [address, block_num]
     try:
-        nonce = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        nonce = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
         return int(nonce)
     except TypeError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_nonce(address, block_num='latest', endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_nonce(
+    address, block_num="latest", endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     See get_account_nonce
     """
     return get_account_nonce(address, block_num, endpoint, timeout)
 
-def get_transaction_count(address, block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_transaction_count(
+    address, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the number of transactions the given address has sent for the given block number
     Legacy for apiv1. For apiv2, please use get_account_nonce/get_transactions_count/get_staking_transactions_count apis for
@@ -202,18 +201,20 @@ def get_transaction_count(address, block_num, endpoint=_default_endpoint, timeou
     -------------
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/rpc/transaction.go#L69
     """
-    method = 'hmyv2_getTransactionCount'
-    params = [
-        address,
-        block_num
-    ]
+    method = "hmyv2_getTransactionCount"
+    params = [address, block_num]
     try:
-        nonce = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        nonce = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
         return int(nonce)
     except TypeError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transactions_count(address, tx_type, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_transactions_count(
+    address, tx_type, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the number of regular transactions from genesis of input type
 
@@ -244,18 +245,20 @@ def get_transactions_count(address, tx_type, endpoint=_default_endpoint, timeout
     https://api.hmny.io/#fc97aed2-e65e-4cf4-bc01-8dadb76732c0
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/rpc/transaction.go#L114
     """
-    method = 'hmyv2_getTransactionsCount'
-    params = [
-        address,
-        tx_type
-    ]
+    method = "hmyv2_getTransactionsCount"
+    params = [address, tx_type]
     try:
-        tx_count = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        tx_count = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )["result"]
         return int(tx_count)
     except TypeError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_staking_transactions_count(address, tx_type, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_staking_transactions_count(
+    address, tx_type, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the number of staking transactions from genesis of input type ("SENT", "RECEIVED", "ALL")
 
@@ -286,20 +289,27 @@ def get_staking_transactions_count(address, tx_type, endpoint=_default_endpoint,
     https://api.hmny.io/#ddc1b029-f341-4c4d-ba19-74b528d6e5e5
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/rpc/transaction.go#L134
     """
-    method = 'hmyv2_getStakingTransactionsCount'
-    params = [
-        address,
-        tx_type
-    ]
+    method = "hmyv2_getStakingTransactionsCount"
+    params = [address, tx_type]
     try:
-        tx_count = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        tx_count = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )["result"]
         return int(tx_count)
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transaction_history(address, page=0, page_size=1000, include_full_tx=False, tx_type='ALL',
-        order='ASC', endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> list:
+
+def get_transaction_history(
+    address,
+    page=0,
+    page_size=1000,
+    include_full_tx=False,
+    tx_type="ALL",
+    order="ASC",
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> list:
     """
     Get list of transactions sent and/or received by the account
 
@@ -345,24 +355,34 @@ def get_transaction_history(address, page=0, page_size=1000, include_full_tx=Fal
     """
     params = [
         {
-            'address': address,
-            'pageIndex': page,
-            'pageSize': page_size,
-            'fullTx': include_full_tx,
-            'txType': tx_type,
-            'order': order
+            "address": address,
+            "pageIndex": page,
+            "pageSize": page_size,
+            "fullTx": include_full_tx,
+            "txType": tx_type,
+            "order": order,
         }
     ]
-    method = 'hmyv2_getTransactionsHistory'
+    method = "hmyv2_getTransactionsHistory"
     try:
-        tx_history = rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)
-        return tx_history['result']['transactions']
+        tx_history = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )
+        return tx_history["result"]["transactions"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_staking_transaction_history(address, page=0, page_size=1000, include_full_tx=False, tx_type='ALL',
-        order='ASC', endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> list:
+
+def get_staking_transaction_history(
+    address,
+    page=0,
+    page_size=1000,
+    include_full_tx=False,
+    tx_type="ALL",
+    order="ASC",
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> list:
     """
     Get list of staking transactions sent by the account
 
@@ -419,23 +439,28 @@ def get_staking_transaction_history(address, page=0, page_size=1000, include_ful
     """
     params = [
         {
-            'address': address,
-            'pageIndex': page,
-            'pageSize': page_size,
-            'fullTx': include_full_tx,
-            'txType': tx_type,
-            'order': order
+            "address": address,
+            "pageIndex": page,
+            "pageSize": page_size,
+            "fullTx": include_full_tx,
+            "txType": tx_type,
+            "order": order,
         }
     ]
     # Using v2 API, because getStakingTransactionHistory not implemented in v1
-    method = 'hmyv2_getStakingTransactionsHistory'
+    method = "hmyv2_getStakingTransactionsHistory"
     try:
-        stx_history =  rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
-        return stx_history['staking_transactions']
+        stx_history = rpc_request(
+            method, params=params, endpoint=endpoint, timeout=timeout
+        )["result"]
+        return stx_history["staking_transactions"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_balance_on_all_shards(address, skip_error=True, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_balance_on_all_shards(
+    address, skip_error=True, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get current account balance in all shards & optionally report errors getting account balance for a shard
 
@@ -467,19 +492,23 @@ def get_balance_on_all_shards(address, skip_error=True, endpoint=_default_endpoi
     sharding_structure = get_sharding_structure(endpoint=endpoint, timeout=timeout)
     for shard in sharding_structure:
         try:
-            balances.append({
-                'shard': shard['shardID'],
-                'balance': get_balance(address, endpoint=shard['http'], timeout=timeout)
-            })
+            balances.append(
+                {
+                    "shard": shard["shardID"],
+                    "balance": get_balance(
+                        address, endpoint=shard["http"], timeout=timeout
+                    ),
+                }
+            )
         except (KeyError, RPCError, RequestsError, RequestsTimeoutError):
             if not skip_error:
-                balances.append({
-                    'shard': shard['shardID'],
-                    'balance': None
-                })
+                balances.append({"shard": shard["shardID"], "balance": None})
     return balances
 
-def get_total_balance(address, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_total_balance(
+    address, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get total account balance on all shards
 
@@ -507,7 +536,9 @@ def get_total_balance(address, endpoint=_default_endpoint, timeout=_default_time
     get_balance_on_all_shards
     """
     try:
-        balances = get_balance_on_all_shards(address, skip_error=False, endpoint=endpoint, timeout=timeout)
-        return sum(b['balance'] for b in balances)
+        balances = get_balance_on_all_shards(
+            address, skip_error=False, endpoint=endpoint, timeout=timeout
+        )
+        return sum(b["balance"] for b in balances)
     except TypeError as e:
         raise RuntimeError from e
diff --git a/pyhmy/bech32/bech32.py b/pyhmy/bech32/bech32.py
index d450080..212705d 100644
--- a/pyhmy/bech32/bech32.py
+++ b/pyhmy/bech32/bech32.py
@@ -26,11 +26,11 @@ CHARSET = "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
 
 def bech32_polymod(values):
     """Internal function that computes the Bech32 checksum."""
-    generator = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3]
+    generator = [0x3B6A57B2, 0x26508E6D, 0x1EA119FA, 0x3D4233DD, 0x2A1462B3]
     chk = 1
     for value in values:
         top = chk >> 25
-        chk = (chk & 0x1ffffff) << 5 ^ value
+        chk = (chk & 0x1FFFFFF) << 5 ^ value
         for i in range(5):
             chk ^= generator[i] if ((top >> i) & 1) else 0
     return chk
@@ -56,22 +56,23 @@ def bech32_create_checksum(hrp, data):
 def bech32_encode(hrp, data):
     """Compute a Bech32 string given HRP and data values."""
     combined = data + bech32_create_checksum(hrp, data)
-    return hrp + '1' + ''.join([CHARSET[d] for d in combined])
+    return hrp + "1" + "".join([CHARSET[d] for d in combined])
 
 
 def bech32_decode(bech):
     """Validate a Bech32 string, and determine HRP and data."""
-    if ((any(ord(x) < 33 or ord(x) > 126 for x in bech)) or
-            (bech.lower() != bech and bech.upper() != bech)):
+    if (any(ord(x) < 33 or ord(x) > 126 for x in bech)) or (
+        bech.lower() != bech and bech.upper() != bech
+    ):
         return (None, None)
     bech = bech.lower()
-    pos = bech.rfind('1')
+    pos = bech.rfind("1")
     if pos < 1 or pos + 7 > len(bech) or len(bech) > 90:
         return (None, None)
-    if not all(x in CHARSET for x in bech[pos+1:]):
+    if not all(x in CHARSET for x in bech[pos + 1 :]):
         return (None, None)
     hrp = bech[:pos]
-    data = [CHARSET.find(x) for x in bech[pos+1:]]
+    data = [CHARSET.find(x) for x in bech[pos + 1 :]]
     if not bech32_verify_checksum(hrp, data):
         return (None, None)
     return (hrp, data[:-6])
diff --git a/pyhmy/blockchain.py b/pyhmy/blockchain.py
index 50bb3b3..9962c14 100644
--- a/pyhmy/blockchain.py
+++ b/pyhmy/blockchain.py
@@ -1,12 +1,8 @@
-from .rpc.request import (
-    rpc_request
-)
+from .rpc.request import rpc_request
 
-from .exceptions import (
-    InvalidRPCReplyError
-)
+from .exceptions import InvalidRPCReplyError
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 #############################
@@ -37,12 +33,13 @@ def get_bad_blocks(endpoint=_default_endpoint, timeout=_default_timeout) -> list
     -------------
     https://api.hmny.io/#0ba3c7b6-6aa9-46b8-9c84-f8782e935951
     """
-    method = 'hmyv2_getCurrentBadBlocks'
+    method = "hmyv2_getCurrentBadBlocks"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def chain_id(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Chain id of the chain
@@ -67,13 +64,14 @@ def chain_id(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     -------------
     https://github.com/harmony-one/harmony/blob/343dbe89b3c105f8104ab877769070ba6fdd0133/rpc/blockchain.go#L44
     """
-    method = 'hmyv2_chainId'
+    method = "hmyv2_chainId"
     try:
         data = rpc_request(method, endpoint=endpoint, timeout=timeout)
-        return data['result']
+        return data["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_node_metadata(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Get config for the node
@@ -143,13 +141,14 @@ def get_node_metadata(endpoint=_default_endpoint, timeout=_default_timeout) -> d
     https://github.com/harmony-one/harmony/blob/v1.10.2/internal/params/config.go#L233 for chain-config dict
     https://github.com/harmony-one/harmony/blob/9f320436ff30d9babd957bc5f2e15a1818c86584/node/api.go#L110 for consensus dict
     """
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     try:
         metadata = rpc_request(method, endpoint=endpoint, timeout=timeout)
-        return metadata['result']
+        return metadata["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_peer_info(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Get peer info for the node
@@ -181,12 +180,13 @@ def get_peer_info(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     --------
     get_node_metadata
     """
-    method = 'hmyv2_getPeerInfo'
+    method = "hmyv2_getPeerInfo"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def protocol_version(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get the current Harmony protocol version this node supports
@@ -212,13 +212,14 @@ def protocol_version(endpoint=_default_endpoint, timeout=_default_timeout) -> in
     -------------
     https://api.hmny.io/#cab9fcc2-e3cd-4bc9-b62a-13e4e046e2fd
     """
-    method = 'hmyv2_protocolVersion'
+    method = "hmyv2_protocolVersion"
     try:
         value = rpc_request(method, endpoint=endpoint, timeout=timeout)
-        return value['result']
+        return value["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_num_peers(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get number of peers connected to the node
@@ -244,12 +245,15 @@ def get_num_peers(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     -------------
     https://api.hmny.io/#09287e0b-5b61-4d18-a0f1-3afcfc3369c1
     """
-    method = 'net_peerCount'
-    try:                # Number of peers represented as a hex string
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'], 16)
+    method = "net_peerCount"
+    try:  # Number of peers represented as a hex string
+        return int(
+            rpc_request(method, endpoint=endpoint, timeout=timeout)["result"], 16
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_version(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get version of the EVM network (https://chainid.network/)
@@ -275,12 +279,15 @@ def get_version(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     -------------
     https://api.hmny.io/#09287e0b-5b61-4d18-a0f1-3afcfc3369c1
     """
-    method = 'net_version'
+    method = "net_version"
     try:
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'], 16)   # this is hexadecimal
+        return int(
+            rpc_request(method, endpoint=endpoint, timeout=timeout)["result"], 16
+        )  # this is hexadecimal
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def in_sync(endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
     """
     Whether the shard chain is in sync or syncing (not out of sync)
@@ -305,12 +312,13 @@ def in_sync(endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/blockchain.go#L690
     """
-    method = 'hmyv2_inSync'
+    method = "hmyv2_inSync"
     try:
-        return bool(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return bool(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def beacon_in_sync(endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
     """
     Whether the beacon chain is in sync or syncing (not out of sync)
@@ -335,12 +343,13 @@ def beacon_in_sync(endpoint=_default_endpoint, timeout=_default_timeout) -> bool
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/blockchain.go#L695
     """
-    method = 'hmyv2_beaconInSync'
+    method = "hmyv2_beaconInSync"
     try:
-        return bool(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return bool(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_staking_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get epoch number when blockchain switches to EPoS election
@@ -370,13 +379,14 @@ def get_staking_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -> i
     ------
     get_node_metadata
     """
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     try:
-        data = rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
-        return int(data['chain-config']['staking-epoch'])
+        data = rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
+        return int(data["chain-config"]["staking-epoch"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_prestaking_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get epoch number when blockchain switches to allow staking features without election
@@ -406,13 +416,14 @@ def get_prestaking_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -
     ------
     get_node_metadata
     """
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     try:
-        data = rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
-        return int(data['chain-config']['prestaking-epoch'])
+        data = rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
+        return int(data["chain-config"]["prestaking-epoch"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ########################
 # Sharding information #
 ########################
@@ -441,13 +452,18 @@ def get_shard(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     --------
     get_node_metadata
     """
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']['shard-id']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"][
+            "shard-id"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_sharding_structure(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_sharding_structure(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get network sharding structure
 
@@ -475,12 +491,13 @@ def get_sharding_structure(endpoint=_default_endpoint, timeout=_default_timeout)
     -------------
     https://api.hmny.io/#9669d49e-43c1-47d9-a3fd-e7786e5879df
     """
-    method = 'hmyv2_getShardingStructure'
+    method = "hmyv2_getShardingStructure"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 #############################
 # Current status of network #
 #############################
@@ -509,13 +526,16 @@ def get_leader_address(endpoint=_default_endpoint, timeout=_default_timeout) ->
     -------------
     https://api.hmny.io/#8b08d18c-017b-4b44-a3c3-356f9c12dacd
     """
-    method = 'hmyv2_getLeader'
+    method = "hmyv2_getLeader"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def is_last_block(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
+
+def is_last_block(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> bool:
     """
     If the block at block_num is the last block
 
@@ -544,13 +564,20 @@ def is_last_block(block_num, endpoint=_default_endpoint, timeout=_default_timeou
     params = [
         block_num,
     ]
-    method = 'hmyv2_isLastBlock'
+    method = "hmyv2_isLastBlock"
     try:
-        return bool(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return bool(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def epoch_last_block(epoch, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def epoch_last_block(
+    epoch, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Returns the number of the last block in the epoch
 
@@ -579,12 +606,17 @@ def epoch_last_block(epoch, endpoint=_default_endpoint, timeout=_default_timeout
     params = [
         epoch,
     ]
-    method = 'hmyv2_epochLastBlock'
+    method = "hmyv2_epochLastBlock"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_circulating_supply(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get current circulation supply of tokens in ONE
@@ -610,12 +642,13 @@ def get_circulating_supply(endpoint=_default_endpoint, timeout=_default_timeout)
     -------------
     https://api.hmny.io/#8398e818-ac2d-4ad8-a3b4-a00927395044
     """
-    method = 'hmyv2_getCirculatingSupply'
+    method = "hmyv2_getCirculatingSupply"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_total_supply(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get total number of pre-mined tokens
@@ -641,12 +674,13 @@ def get_total_supply(endpoint=_default_endpoint, timeout=_default_timeout) -> in
     -------------
     https://api.hmny.io/#3dcea518-9e9a-4a20-84f4-c7a0817b2196
     """
-    method = 'hmyv2_getTotalSupply'
+    method = "hmyv2_getTotalSupply"
     try:
-        rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_block_number(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get current block number
@@ -672,12 +706,13 @@ def get_block_number(endpoint=_default_endpoint, timeout=_default_timeout) -> in
     -------------
     https://api.hmny.io/#2602b6c4-a579-4b7c-bce8-85331e0db1a7
     """
-    method = 'hmyv2_blockNumber'
+    method = "hmyv2_blockNumber"
     try:
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_current_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get current epoch number
@@ -703,12 +738,13 @@ def get_current_epoch(endpoint=_default_endpoint, timeout=_default_timeout) -> i
     -------------
     https://api.hmny.io/#9b8e98b0-46d1-4fa0-aaa6-317ff1ddba59
     """
-    method = 'hmyv2_getEpoch'
+    method = "hmyv2_getEpoch"
     try:
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_last_cross_links(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
     """
     Get last cross shard links
@@ -741,12 +777,13 @@ def get_last_cross_links(endpoint=_default_endpoint, timeout=_default_timeout) -
     -------------
     https://api.hmny.io/#4994cdf9-38c4-4b1d-90a8-290ddaa3040e
     """
-    method = 'hmyv2_getLastCrossLinks'
+    method = "hmyv2_getLastCrossLinks"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_gas_price(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get network gas price
@@ -772,12 +809,13 @@ def get_gas_price(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     -------------
     https://api.hmny.io/#1d53fd59-a89f-436c-a171-aec9d9623f48
     """
-    method = 'hmyv2_gasPrice'
+    method = "hmyv2_gasPrice"
     try:
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ##############
 # Block RPCs #
 ##############
@@ -822,13 +860,16 @@ def get_latest_header(endpoint=_default_endpoint, timeout=_default_timeout) -> d
     -------------
     https://api.hmny.io/#73fc9b97-b048-4b85-8a93-4d2bf1da54a6
     """
-    method = 'hmyv2_latestHeader'
+    method = "hmyv2_latestHeader"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_header_by_number(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_header_by_number(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get block header of block at block_num
 
@@ -854,16 +895,19 @@ def get_header_by_number(block_num, endpoint=_default_endpoint, timeout=_default
     -------------
     https://api.hmny.io/#01148e4f-72bb-426d-a123-718a161eaec0
     """
-    method = 'hmyv2_getHeaderByNumber'
-    params = [
-        block_num
-    ]
+    method = "hmyv2_getHeaderByNumber"
+    params = [block_num]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_latest_chain_headers(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_latest_chain_headers(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get block header of latest block for beacon chain & shard chain
 
@@ -908,14 +952,22 @@ def get_latest_chain_headers(endpoint=_default_endpoint, timeout=_default_timeou
     -------------
     https://api.hmny.io/#7625493d-16bf-4611-8009-9635d063b4c0
     """
-    method = 'hmyv2_getLatestChainHeaders'
+    method = "hmyv2_getLatestChainHeaders"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_by_number(block_num, full_tx=False, include_tx=False, include_staking_tx=False,
-        include_signers=False, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_block_by_number(
+    block_num,
+    full_tx=False,
+    include_tx=False,
+    include_staking_tx=False,
+    include_signers=False,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> dict:
     """
     Get block by number
 
@@ -979,20 +1031,30 @@ def get_block_by_number(block_num, full_tx=False, include_tx=False, include_stak
     params = [
         block_num,
         {
-            'inclTx': include_tx,
-            'fullTx': full_tx,
-            'inclStaking': include_staking_tx,
-            'withSigners': include_signers,
+            "inclTx": include_tx,
+            "fullTx": full_tx,
+            "inclStaking": include_staking_tx,
+            "withSigners": include_signers,
         },
     ]
-    method = 'hmyv2_getBlockByNumber'
+    method = "hmyv2_getBlockByNumber"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_by_hash(block_hash, full_tx=False, include_tx=False, include_staking_tx=False,
-        include_signers=False, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_block_by_hash(
+    block_hash,
+    full_tx=False,
+    include_tx=False,
+    include_staking_tx=False,
+    include_signers=False,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> dict:
     """
     Get block by hash
 
@@ -1027,19 +1089,24 @@ def get_block_by_hash(block_hash, full_tx=False, include_tx=False, include_staki
     params = [
         block_hash,
         {
-            'inclTx': include_tx,
-            'fullTx': full_tx,
-            'inclStaking': include_staking_tx,
-            'withSigners': include_signers,
+            "inclTx": include_tx,
+            "fullTx": full_tx,
+            "inclStaking": include_staking_tx,
+            "withSigners": include_signers,
         },
     ]
-    method = 'hmyv2_getBlockByHash'
+    method = "hmyv2_getBlockByHash"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_transaction_count_by_number(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_block_transaction_count_by_number(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get transaction count for specific block number
 
@@ -1068,16 +1135,21 @@ def get_block_transaction_count_by_number(block_num, endpoint=_default_endpoint,
     -------------
     https://api.hmny.io/#26c5adfb-d757-4595-9eb7-c6efef63df32
     """
-    params = [
-        block_num
-    ]
-    method = 'hmyv2_getBlockTransactionCountByNumber'
+    params = [block_num]
+    method = "hmyv2_getBlockTransactionCountByNumber"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_transaction_count_by_hash(block_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_block_transaction_count_by_hash(
+    block_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get transaction count for specific block hash
 
@@ -1106,16 +1178,21 @@ def get_block_transaction_count_by_hash(block_hash, endpoint=_default_endpoint,
     -------------
     https://api.hmny.io/#66c68844-0208-49bb-a83b-08722bc113eb
     """
-    params = [
-        block_hash
-    ]
-    method = 'hmyv2_getBlockTransactionCountByHash'
+    params = [block_hash]
+    method = "hmyv2_getBlockTransactionCountByHash"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_staking_transaction_count_by_number(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_block_staking_transaction_count_by_number(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get staking transaction count for specific block number
 
@@ -1144,16 +1221,21 @@ def get_block_staking_transaction_count_by_number(block_num, endpoint=_default_e
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/transaction.go#L494
     """
-    params = [
-        block_num
-    ]
-    method = 'hmyv2_getBlockStakingTransactionCountByNumber'
+    params = [block_num]
+    method = "hmyv2_getBlockStakingTransactionCountByNumber"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_staking_transaction_count_by_hash(block_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_block_staking_transaction_count_by_hash(
+    block_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get staking transaction count for specific block hash
 
@@ -1182,18 +1264,28 @@ def get_block_staking_transaction_count_by_hash(block_hash, endpoint=_default_en
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/transaction.go#L523
     """
-    params = [
-        block_hash
-    ]
-    method = 'hmyv2_getBlockStakingTransactionCountByHash'
+    params = [block_hash]
+    method = "hmyv2_getBlockStakingTransactionCountByHash"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_blocks(start_block, end_block, full_tx=False, include_tx=False, include_staking_tx=False,
-        include_signers=False, endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> list:
+
+def get_blocks(
+    start_block,
+    end_block,
+    full_tx=False,
+    include_tx=False,
+    include_staking_tx=False,
+    include_signers=False,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> list:
     """
     Get list of blocks from a range
 
@@ -1233,19 +1325,24 @@ def get_blocks(start_block, end_block, full_tx=False, include_tx=False, include_
         start_block,
         end_block,
         {
-            'withSigners': include_signers,
-            'fullTx': full_tx,
-            'inclStaking': include_staking_tx,
-            'inclTx': include_tx
+            "withSigners": include_signers,
+            "fullTx": full_tx,
+            "inclStaking": include_staking_tx,
+            "inclTx": include_tx,
         },
     ]
-    method = 'hmyv2_getBlocks'
+    method = "hmyv2_getBlocks"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_signers(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_block_signers(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of block signers for specific block number
 
@@ -1272,16 +1369,19 @@ def get_block_signers(block_num, endpoint=_default_endpoint, timeout=_default_ti
     -------------
     https://api.hmny.io/#1e4b5f41-9db6-4dea-92fb-4408db78e622
     """
-    params = [
-        block_num
-    ]
-    method = 'hmyv2_getBlockSigners'
+    params = [block_num]
+    method = "hmyv2_getBlockSigners"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_block_signers_keys(block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_block_signers_keys(
+    block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of block signer public bls keys for specific block number
 
@@ -1308,16 +1408,19 @@ def get_block_signers_keys(block_num, endpoint=_default_endpoint, timeout=_defau
     -------------
     https://api.hmny.io/#9f9c8298-1a4e-4901-beac-f34b59ed02f1
     """
-    params = [
-        block_num
-    ]
-    method = 'hmyv2_getBlockSignerKeys'
+    params = [block_num]
+    method = "hmyv2_getBlockSignerKeys"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def is_block_signer(block_num, address, endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
+
+def is_block_signer(
+    block_num, address, endpoint=_default_endpoint, timeout=_default_timeout
+) -> bool:
     """
     Determine if the account at address is a signer for the block at block_num
 
@@ -1345,17 +1448,19 @@ def is_block_signer(block_num, address, endpoint=_default_endpoint, timeout=_def
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/blockchain.go#L368
     """
-    params = [
-        block_num,
-        address
-    ]
-    method = 'hmyv2_isBlockSigner'
+    params = [block_num, address]
+    method = "hmyv2_isBlockSigner"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_signed_blocks(address, endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
+
+def get_signed_blocks(
+    address, endpoint=_default_endpoint, timeout=_default_timeout
+) -> bool:
     """
     The number of blocks a particular validator signed for last blocksPeriod (1 epoch)
 
@@ -1381,15 +1486,18 @@ def get_signed_blocks(address, endpoint=_default_endpoint, timeout=_default_time
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/blockchain.go#L406
     """
-    params = [
-        address
-    ]
-    method = 'hmyv2_getSignedBlocks'
+    params = [address]
+    method = "hmyv2_getSignedBlocks"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_validators(epoch, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Get list of validators for specific epoch number
@@ -1420,16 +1528,19 @@ def get_validators(epoch, endpoint=_default_endpoint, timeout=_default_timeout)
     -------------
     https://api.hmny.io/#4dfe91ad-71fa-4c7d-83f3-d1c86a804da5
     """
-    params = [
-        epoch
-    ]
-    method = 'hmyv2_getValidators'
+    params = [epoch]
+    method = "hmyv2_getValidators"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_keys(epoch, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_validator_keys(
+    epoch, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of validator public bls keys for specific epoch number
 
@@ -1456,11 +1567,11 @@ def get_validator_keys(epoch, endpoint=_default_endpoint, timeout=_default_timeo
     -------------
     https://api.hmny.io/#1439b580-fa3c-4d44-a79d-303390997a8c
     """
-    params = [
-        epoch
-    ]
-    method = 'hmyv2_getValidatorKeys'
+    params = [epoch]
+    method = "hmyv2_getValidatorKeys"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
diff --git a/pyhmy/cli.py b/pyhmy/cli.py
index 060eefa..fd96890 100644
--- a/pyhmy/cli.py
+++ b/pyhmy/cli.py
@@ -54,9 +54,21 @@ import requests
 from .util import get_bls_build_variables, get_gopath
 
 if sys.platform.startswith("linux"):
-    _libs = {"libbls384_256.so", "libcrypto.so.10", "libgmp.so.10", "libgmpxx.so.4", "libmcl.so"}
+    _libs = {
+        "libbls384_256.so",
+        "libcrypto.so.10",
+        "libgmp.so.10",
+        "libgmpxx.so.4",
+        "libmcl.so",
+    }
 else:
-    _libs = {"libbls384_256.dylib", "libcrypto.1.0.0.dylib", "libgmp.10.dylib", "libgmpxx.4.dylib", "libmcl.dylib"}
+    _libs = {
+        "libbls384_256.dylib",
+        "libcrypto.1.0.0.dylib",
+        "libgmp.10.dylib",
+        "libgmpxx.4.dylib",
+        "libmcl.dylib",
+    }
 _accounts = {}  # Internal accounts keystore, make sure to sync when needed.
 _account_keystore_path = "~/.hmy/account-keys"  # Internal path to account keystore, will match the current binary.
 _binary_path = "hmy"  # Internal binary path.
@@ -149,14 +161,16 @@ def _make_call_command(command):
     if isinstance(command, list):
         command_toks = command
     else:
-        all_strings = sorted(re.findall(r'"(.*?)"', command), key=lambda e: len(e), reverse=True)
+        all_strings = sorted(
+            re.findall(r'"(.*?)"', command), key=lambda e: len(e), reverse=True
+        )
         for i, string in enumerate(all_strings):
             command = command.replace(string, f"{_arg_prefix}_{i}")
         command_toks_prefix = [el for el in command.split(" ") if el]
         command_toks = []
         for el in command_toks_prefix:
             if el.startswith(f'"{_arg_prefix}_') and el.endswith(f'"'):
-                index = int(el.replace(f'"{_arg_prefix}_', '').replace('"', ''))
+                index = int(el.replace(f'"{_arg_prefix}_', "").replace('"', ""))
                 command_toks.append(all_strings[index])
             else:
                 command_toks.append(el)
@@ -183,8 +197,12 @@ def is_valid_binary(path):
     path = os.path.realpath(path)
     os.chmod(path, os.stat(path).st_mode | stat.S_IEXEC)
     try:
-        proc = subprocess.Popen([path, "version"], env=environment,
-                                stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        proc = subprocess.Popen(
+            [path, "version"],
+            env=environment,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+        )
         out, err = proc.communicate()
         if not err:
             return False
@@ -223,12 +241,18 @@ def get_version():
     """
     :return: The version string of the CLI binary.
     """
-    proc = subprocess.Popen([_binary_path, "version"], env=environment,
-                            stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    proc = subprocess.Popen(
+        [_binary_path, "version"],
+        env=environment,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
     out, err = proc.communicate()
     if not err:
-        raise RuntimeError(f"Could not get version.\n"
-                           f"\tGot exit code {proc.returncode}. Expected non-empty error message.")
+        raise RuntimeError(
+            f"Could not get version.\n"
+            f"\tGot exit code {proc.returncode}. Expected non-empty error message."
+        )
     return err.decode().strip()
 
 
@@ -280,8 +304,9 @@ def remove_account(name):
     try:
         shutil.rmtree(keystore_path)
     except (shutil.Error, FileNotFoundError) as err:
-        raise RuntimeError(f"Failed to delete dir: {keystore_path}\n"
-                           f"\tException: {err}") from err
+        raise RuntimeError(
+            f"Failed to delete dir: {keystore_path}\n" f"\tException: {err}"
+        ) from err
     _sync_accounts()
 
 
@@ -304,11 +329,14 @@ def single_call(command, timeout=60, error_ok=False):
     """
     command_toks = [_binary_path] + _make_call_command(command)
     try:
-        return subprocess.check_output(command_toks, env=environment, timeout=timeout).decode()
+        return subprocess.check_output(
+            command_toks, env=environment, timeout=timeout
+        ).decode()
     except subprocess.CalledProcessError as err:
         if not error_ok:
-            raise RuntimeError(f"Bad CLI args: `{command}`\n "
-                               f"\tException: {err}") from err
+            raise RuntimeError(
+                f"Bad CLI args: `{command}`\n " f"\tException: {err}"
+            ) from err
         return err.output.decode()
 
 
@@ -321,11 +349,14 @@ def expect_call(command, timeout=60):
     """
     command_toks = _make_call_command(command)
     try:
-        proc = pexpect.spawn(f"{_binary_path}", command_toks, env=environment, timeout=timeout)
+        proc = pexpect.spawn(
+            f"{_binary_path}", command_toks, env=environment, timeout=timeout
+        )
         proc.delaybeforesend = None
     except pexpect.ExceptionPexpect as err:
-        raise RuntimeError(f"Bad CLI args: `{command}`\n "
-                           f"\tException: {err}") from err
+        raise RuntimeError(
+            f"Bad CLI args: `{command}`\n " f"\tException: {err}"
+        ) from err
     return proc
 
 
@@ -341,28 +372,43 @@ def download(path="./bin/hmy", replace=True, verbose=True):
     """
     path = os.path.realpath(path)
     parent_dir = Path(path).parent
-    assert not os.path.isdir(path), f"path `{path}` must specify a file, not a directory."
+    assert not os.path.isdir(
+        path
+    ), f"path `{path}` must specify a file, not a directory."
 
     if not os.path.exists(path) or replace:
         old_cwd = os.getcwd()
         os.makedirs(parent_dir, exist_ok=True)
         os.chdir(parent_dir)
         hmy_script_path = os.path.join(parent_dir, "hmy.sh")
-        with open(hmy_script_path, 'w') as f:
-            f.write(requests.get("https://raw.githubusercontent.com/harmony-one/go-sdk/master/scripts/hmy.sh")
-                    .content.decode())
+        with open(hmy_script_path, "w") as f:
+            f.write(
+                requests.get(
+                    "https://raw.githubusercontent.com/harmony-one/go-sdk/master/scripts/hmy.sh"
+                ).content.decode()
+            )
         os.chmod(hmy_script_path, os.stat(hmy_script_path).st_mode | stat.S_IEXEC)
         same_name_file = False
-        if os.path.exists(os.path.join(parent_dir, "hmy")) and Path(path).name != "hmy":  # Save same name file.
+        if (
+            os.path.exists(os.path.join(parent_dir, "hmy")) and Path(path).name != "hmy"
+        ):  # Save same name file.
             same_name_file = True
-            os.rename(os.path.join(parent_dir, "hmy"), os.path.join(parent_dir, ".hmy_tmp"))
+            os.rename(
+                os.path.join(parent_dir, "hmy"), os.path.join(parent_dir, ".hmy_tmp")
+            )
         if verbose:
-            subprocess.call([hmy_script_path, '-d'])
+            subprocess.call([hmy_script_path, "-d"])
         else:
-            subprocess.call([hmy_script_path, '-d'], stdout=open(os.devnull, 'w'), stderr=subprocess.STDOUT)
+            subprocess.call(
+                [hmy_script_path, "-d"],
+                stdout=open(os.devnull, "w"),
+                stderr=subprocess.STDOUT,
+            )
         os.rename(os.path.join(parent_dir, "hmy"), path)
         if same_name_file:
-            os.rename(os.path.join(parent_dir, ".hmy_tmp"), os.path.join(parent_dir, "hmy"))
+            os.rename(
+                os.path.join(parent_dir, ".hmy_tmp"), os.path.join(parent_dir, "hmy")
+            )
         if verbose:
             print(f"Saved harmony binary to: `{path}`")
         os.chdir(old_cwd)
@@ -373,11 +419,16 @@ def download(path="./bin/hmy", replace=True, verbose=True):
             files_in_parent_dir = set(os.listdir(parent_dir))
             if files_in_parent_dir.intersection(_libs) == _libs:
                 env["DYLD_FALLBACK_LIBRARY_PATH"] = parent_dir
-            elif os.path.exists(f"{get_gopath()}/src/github.com/harmony-one/bls") \
-                    and os.path.exists(f"{get_gopath()}/src/github.com/harmony-one/mcl"):
+            elif os.path.exists(
+                f"{get_gopath()}/src/github.com/harmony-one/bls"
+            ) and os.path.exists(f"{get_gopath()}/src/github.com/harmony-one/mcl"):
                 env.update(get_bls_build_variables())
             else:
-                raise RuntimeWarning(f"Could not get environment for downloaded hmy CLI at `{path}`")
+                raise RuntimeWarning(
+                    f"Could not get environment for downloaded hmy CLI at `{path}`"
+                )
         except Exception as e:
-            raise RuntimeWarning(f"Could not get environment for downloaded hmy CLI at `{path}`") from e
+            raise RuntimeWarning(
+                f"Could not get environment for downloaded hmy CLI at `{path}`"
+            ) from e
     return env
diff --git a/pyhmy/contract.py b/pyhmy/contract.py
index 66dee63..abcfa5a 100644
--- a/pyhmy/contract.py
+++ b/pyhmy/contract.py
@@ -1,25 +1,28 @@
-from .rpc.request import (
-    rpc_request
-)
+from .rpc.request import rpc_request
 
-from .transaction import (
-    get_transaction_receipt
-)
+from .transaction import get_transaction_receipt
 
-from .exceptions import (
-    InvalidRPCReplyError
-)
+from .exceptions import InvalidRPCReplyError
 
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 
 #########################
 # Smart contract RPCs
 #########################
-def call(to, block_num, from_address=None, gas=None, gas_price=None, value=None, data=None,
-        endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+def call(
+    to,
+    block_num,
+    from_address=None,
+    gas=None,
+    gas_price=None,
+    value=None,
+    data=None,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> str:
     """
     Execute a smart contract without saving state
 
@@ -60,23 +63,34 @@ def call(to, block_num, from_address=None, gas=None, gas_price=None, value=None,
     """
     params = [
         {
-        'to': to,
-        'from': from_address,
-        'gas': gas,
-        'gasPrice': gas_price,
-        'value': value,
-        'data': data
+            "to": to,
+            "from": from_address,
+            "gas": gas,
+            "gasPrice": gas_price,
+            "value": value,
+            "data": data,
         },
-        block_num
+        block_num,
     ]
-    method = 'hmyv2_call'
+    method = "hmyv2_call"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def estimate_gas(to, from_address=None, gas=None, gas_price=None, value=None, data=None,
-        endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def estimate_gas(
+    to,
+    from_address=None,
+    gas=None,
+    gas_price=None,
+    value=None,
+    data=None,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> int:
     """
     Estimate the gas price needed for a smart contract call
 
@@ -113,21 +127,31 @@ def estimate_gas(to, from_address=None, gas=None, gas_price=None, value=None, da
     -------------
     https://api.hmny.io/?version=latest#b9bbfe71-8127-4dda-b26c-ff95c4c22abd
     """
-    params = [ {
-        'to': to,
-        'from': from_address,
-        'gas': gas,
-        'gasPrice': gas_price,
-        'value': value,
-        'data': data
-    } ]
-    method = 'hmyv2_estimateGas'
+    params = [
+        {
+            "to": to,
+            "from": from_address,
+            "gas": gas,
+            "gasPrice": gas_price,
+            "value": value,
+            "data": data,
+        }
+    ]
+    method = "hmyv2_estimateGas"
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'], 16)
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ],
+            16,
+        )
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_code(address, block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+
+def get_code(
+    address, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Get the code stored at the given address in the state for the given block number
 
@@ -157,17 +181,19 @@ def get_code(address, block_num, endpoint=_default_endpoint, timeout=_default_ti
     https://api.hmny.io/?version=latest#e13e9d78-9322-4dc8-8917-f2e721a8e556
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/contract.go#L59
     """
-    params = [
-        address,
-        block_num
-        ]
-    method = 'hmyv2_getCode'
+    params = [address, block_num]
+    method = "hmyv2_getCode"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_storage_at(address, key, block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+
+def get_storage_at(
+    address, key, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Get the storage from the state at the given address, the key and the block number
 
@@ -199,18 +225,19 @@ def get_storage_at(address, key, block_num, endpoint=_default_endpoint, timeout=
     https://api.hmny.io/?version=latest#fa8ac8bd-952d-4149-968c-857ca76da43f
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/contract.go#L84
     """
-    params = [
-        address,
-        key,
-        block_num
-        ]
-    method = 'hmyv2_getStorageAt'
+    params = [address, key, block_num]
+    method = "hmyv2_getStorageAt"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_contract_address_from_hash(tx_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+
+def get_contract_address_from_hash(
+    tx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Get address of the contract which was deployed in the transaction
         represented by tx_hash
diff --git a/pyhmy/exceptions.py b/pyhmy/exceptions.py
index 2238169..91a6882 100644
--- a/pyhmy/exceptions.py
+++ b/pyhmy/exceptions.py
@@ -1,8 +1,5 @@
-from .rpc.exceptions import (
-    RPCError,
-    RequestsError,
-    RequestsTimeoutError
-)
+from .rpc.exceptions import RPCError, RequestsError, RequestsTimeoutError
+
 
 class InvalidRPCReplyError(RuntimeError):
     """
@@ -11,7 +8,8 @@ class InvalidRPCReplyError(RuntimeError):
     """
 
     def __init__(self, method, endpoint):
-        super().__init__(f'Unexpected reply for {method} from {endpoint}')
+        super().__init__(f"Unexpected reply for {method} from {endpoint}")
+
 
 class InvalidValidatorError(ValueError):
     """
@@ -19,11 +17,11 @@ class InvalidValidatorError(ValueError):
     """
 
     errors = {
-        1: 'Invalid ONE address',
-        2: 'Field not initialized',
-        3: 'Invalid field input',
-        4: 'Error checking blockchain',
-        5: 'Unable to import validator information from blockchain'
+        1: "Invalid ONE address",
+        2: "Field not initialized",
+        3: "Invalid field input",
+        4: "Error checking blockchain",
+        5: "Unable to import validator information from blockchain",
     }
 
     def __init__(self, err_code, msg):
@@ -32,7 +30,8 @@ class InvalidValidatorError(ValueError):
         super().__init__(msg)
 
     def __str__(self):
-        return f'[Errno {self.code}] {self.errors[self.code]}: {self.msg}'
+        return f"[Errno {self.code}] {self.errors[self.code]}: {self.msg}"
+
 
 class TxConfirmationTimedoutError(AssertionError):
     """
@@ -41,4 +40,4 @@ class TxConfirmationTimedoutError(AssertionError):
     """
 
     def __init__(self, msg):
-        super().__init__(f'{msg}')
+        super().__init__(f"{msg}")
diff --git a/pyhmy/logging.py b/pyhmy/logging.py
index 4b4787a..498cf70 100644
--- a/pyhmy/logging.py
+++ b/pyhmy/logging.py
@@ -9,8 +9,8 @@ import logging.handlers
 class _GZipRotator:
     def __call__(self, source, dest):
         os.rename(source, dest)
-        f_in = open(dest, 'rb')
-        f_out = gzip.open("%s.gz" % dest, 'wb')
+        f_in = open(dest, "rb")
+        f_out = gzip.open("%s.gz" % dest, "wb")
         f_out.writelines(f_in)
         f_out.close()
         f_in.close()
@@ -27,13 +27,14 @@ class ControlledLogger:
         :param logger_name: The name of the logger and logfile
         :param log_dir: The directory in which to save this log file (can be abs or relative).
         """
-        if log_dir.endswith('/'):
+        if log_dir.endswith("/"):
             log_dir = log_dir[:-1]
         log_dir = os.path.realpath(log_dir)
         os.makedirs(log_dir, exist_ok=True)
-        handler = logging.handlers.TimedRotatingFileHandler(f"{log_dir}/{logger_name}.log", 'midnight', 1,
-                                                            backupCount=backup_count)
-        handler.setFormatter(logging.Formatter('%(levelname)s - %(message)s'))
+        handler = logging.handlers.TimedRotatingFileHandler(
+            f"{log_dir}/{logger_name}.log", "midnight", 1, backupCount=backup_count
+        )
+        handler.setFormatter(logging.Formatter("%(levelname)s - %(message)s"))
         handler.rotator = _GZipRotator()
 
         self.filename = handler.baseFilename
@@ -63,8 +64,9 @@ class ControlledLogger:
         :param msg: The info message to log
         """
         self._lock.acquire()
-        self.info_buffer.append(f"[{threading.get_ident()}] "
-                                f"{datetime.datetime.utcnow()} : {msg}")
+        self.info_buffer.append(
+            f"[{threading.get_ident()}] " f"{datetime.datetime.utcnow()} : {msg}"
+        )
         self._lock.release()
 
     def debug(self, msg):
@@ -72,8 +74,9 @@ class ControlledLogger:
         :param msg: The debug message to log
         """
         self._lock.acquire()
-        self.debug_buffer.append(f"[{threading.get_ident()}] "
-                                 f"{datetime.datetime.utcnow()} : {msg}")
+        self.debug_buffer.append(
+            f"[{threading.get_ident()}] " f"{datetime.datetime.utcnow()} : {msg}"
+        )
         self._lock.release()
 
     def warning(self, msg):
@@ -81,8 +84,9 @@ class ControlledLogger:
         :param msg: The warning message to log
         """
         self._lock.acquire()
-        self.warning_buffer.append(f"[{threading.get_ident()}] "
-                                   f"{datetime.datetime.utcnow()} : {msg}")
+        self.warning_buffer.append(
+            f"[{threading.get_ident()}] " f"{datetime.datetime.utcnow()} : {msg}"
+        )
         self._lock.release()
 
     def error(self, msg):
@@ -90,33 +94,34 @@ class ControlledLogger:
         :param msg: The error message to log
         """
         self._lock.acquire()
-        self.error_buffer.append(f"[{threading.get_ident()}] "
-                                 f"{datetime.datetime.utcnow()} : {msg}")
+        self.error_buffer.append(
+            f"[{threading.get_ident()}] " f"{datetime.datetime.utcnow()} : {msg}"
+        )
         self._lock.release()
 
     def print_info(self):
         """
         Prints the current info buffer but does not flush it to log file.
         """
-        print('\n'.join(self.info_buffer))
+        print("\n".join(self.info_buffer))
 
     def print_debug(self):
         """
         Prints the current debug buffer but does not flush it to log file.
         """
-        print('\n'.join(self.debug_buffer))
+        print("\n".join(self.debug_buffer))
 
     def print_warning(self):
         """
         Prints the current warning buffer but does not flush it to log file.
         """
-        print('\n'.join(self.warning_buffer))
+        print("\n".join(self.warning_buffer))
 
     def print_error(self):
         """
         Prints the current error buffer but does not flush it to log file.
         """
-        print('\n'.join(self.error_buffer))
+        print("\n".join(self.error_buffer))
 
     def write(self):
         """
diff --git a/pyhmy/rpc/exceptions.py b/pyhmy/rpc/exceptions.py
index a14dfc6..a6ad3ac 100644
--- a/pyhmy/rpc/exceptions.py
+++ b/pyhmy/rpc/exceptions.py
@@ -8,7 +8,8 @@ class RPCError(RuntimeError):
 
     def __init__(self, method, endpoint, error):
         self.error = error
-        super().__init__(f'Error in reply from {endpoint}: {method} returned {error}')
+        super().__init__(f"Error in reply from {endpoint}: {method} returned {error}")
+
 
 class RequestsError(requests.exceptions.RequestException):
     """
@@ -16,7 +17,8 @@ class RequestsError(requests.exceptions.RequestException):
     """
 
     def __init__(self, endpoint):
-        super().__init__(f'Error connecting to {endpoint}')
+        super().__init__(f"Error connecting to {endpoint}")
+
 
 class RequestsTimeoutError(requests.exceptions.Timeout):
     """
@@ -24,4 +26,4 @@ class RequestsTimeoutError(requests.exceptions.Timeout):
     """
 
     def __init__(self, endpoint):
-        super().__init__(f'Error connecting to {endpoint}')
+        super().__init__(f"Error connecting to {endpoint}")
diff --git a/pyhmy/rpc/request.py b/pyhmy/rpc/request.py
index 81f32b0..be1c4e8 100644
--- a/pyhmy/rpc/request.py
+++ b/pyhmy/rpc/request.py
@@ -2,18 +2,16 @@ import json
 
 import requests
 
-from .exceptions import (
-    RequestsError,
-    RequestsTimeoutError,
-    RPCError
-)
+from .exceptions import RequestsError, RequestsTimeoutError, RPCError
 
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 
-def base_request(method, params=None, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+def base_request(
+    method, params=None, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Basic RPC request
 
@@ -45,21 +43,20 @@ def base_request(method, params=None, endpoint=_default_endpoint, timeout=_defau
     if params is None:
         params = []
     elif not isinstance(params, list):
-        raise TypeError(f'invalid type {params.__class__}')
+        raise TypeError(f"invalid type {params.__class__}")
 
     try:
-        payload = {
-            "id": "1",
-            "jsonrpc": "2.0",
-            "method": method,
-            "params": params
-        }
-        headers = {
-            'Content-Type': 'application/json'
-        }
-
-        resp = requests.request('POST', endpoint, headers=headers, data=json.dumps(payload),
-                                timeout=timeout, allow_redirects=True)
+        payload = {"id": "1", "jsonrpc": "2.0", "method": method, "params": params}
+        headers = {"Content-Type": "application/json"}
+
+        resp = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         return resp.content
     except requests.exceptions.Timeout as err:
         raise RequestsTimeoutError(endpoint) from err
@@ -67,7 +64,9 @@ def base_request(method, params=None, endpoint=_default_endpoint, timeout=_defau
         raise RequestsError(endpoint) from err
 
 
-def rpc_request(method, params=None, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+def rpc_request(
+    method, params=None, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     RPC request
 
@@ -106,8 +105,8 @@ def rpc_request(method, params=None, endpoint=_default_endpoint, timeout=_defaul
 
     try:
         resp = json.loads(raw_resp)
-        if 'error' in resp:
-            raise RPCError(method, endpoint, str(resp['error']))
+        if "error" in resp:
+            raise RPCError(method, endpoint, str(resp["error"]))
         return resp
     except json.decoder.JSONDecodeError as err:
         raise RPCError(method, endpoint, raw_resp) from err
diff --git a/pyhmy/signing.py b/pyhmy/signing.py
index 9482ecf..4fddde8 100644
--- a/pyhmy/signing.py
+++ b/pyhmy/signing.py
@@ -1,33 +1,16 @@
 import rlp
 
-from eth_utils.curried import (
-    keccak,
-    to_int,
-    hexstr_if_str,
-    apply_formatters_to_dict
-)
+from eth_utils.curried import keccak, to_int, hexstr_if_str, apply_formatters_to_dict
 
-from rlp.sedes import (
-    big_endian_int,
-    Binary,
-    binary
-)
+from rlp.sedes import big_endian_int, Binary, binary
 
-from eth_account import (
-    Account
-)
+from eth_account import Account
 
-from eth_rlp import (
-    HashableRLP
-)
+from eth_rlp import HashableRLP
 
-from hexbytes import (
-    HexBytes
-)
+from hexbytes import HexBytes
 
-from eth_account._utils.signing import (
-    sign_transaction_hash
-)
+from eth_account._utils.signing import sign_transaction_hash
 
 from eth_account._utils.legacy_transactions import (
     Transaction as SignedEthereumTxData,
@@ -35,96 +18,101 @@ from eth_account._utils.legacy_transactions import (
     LEGACY_TRANSACTION_FORMATTERS as ETHEREUM_FORMATTERS,
     TRANSACTION_DEFAULTS,
     chain_id_to_v,
-    UNSIGNED_TRANSACTION_FIELDS
+    UNSIGNED_TRANSACTION_FIELDS,
 )
 
-from cytoolz import (
-    dissoc,
-    pipe,
-    merge,
-    partial
-)
+from cytoolz import dissoc, pipe, merge, partial
 
-from eth_account.datastructures import (
-    SignedTransaction
-)
+from eth_account.datastructures import SignedTransaction
 
-from .util import (
-    chain_id_to_int,
-    convert_one_to_hex
-)
+from .util import chain_id_to_int, convert_one_to_hex
 
 HARMONY_FORMATTERS = dict(
     ETHEREUM_FORMATTERS,
-    shardID=hexstr_if_str(to_int),          # additional fields for Harmony transaction
-    toShardID=hexstr_if_str(to_int),        # which may be cross shard
-    )
+    shardID=hexstr_if_str(to_int),  # additional fields for Harmony transaction
+    toShardID=hexstr_if_str(to_int),  # which may be cross shard
+)
+
 
 class UnsignedHarmonyTxData(HashableRLP):
     fields = (
-        ('nonce', big_endian_int),
-        ('gasPrice', big_endian_int),
-        ('gas', big_endian_int),
-        ('shardID', big_endian_int),
-        ('toShardID', big_endian_int),
-        ('to', Binary.fixed_length(20, allow_empty=True)),
-        ('value', big_endian_int),
-        ('data', binary),
+        ("nonce", big_endian_int),
+        ("gasPrice", big_endian_int),
+        ("gas", big_endian_int),
+        ("shardID", big_endian_int),
+        ("toShardID", big_endian_int),
+        ("to", Binary.fixed_length(20, allow_empty=True)),
+        ("value", big_endian_int),
+        ("data", binary),
     )
 
+
 class SignedHarmonyTxData(HashableRLP):
     fields = UnsignedHarmonyTxData._meta.fields + (
-        ("v", big_endian_int),              # Recovery value + 27
-        ("r", big_endian_int),              # First 32 bytes
-        ("s", big_endian_int),              # Next  32 bytes
+        ("v", big_endian_int),  # Recovery value + 27
+        ("r", big_endian_int),  # First 32 bytes
+        ("s", big_endian_int),  # Next  32 bytes
     )
 
-def encode_transaction(unsigned_transaction, vrs):              # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L55
-    '''serialize and encode an unsigned transaction with v,r,s'''
+
+def encode_transaction(
+    unsigned_transaction, vrs
+):  # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L55
+    """serialize and encode an unsigned transaction with v,r,s"""
     (v, r, s) = vrs
-    chain_naive_transaction = dissoc(
-        unsigned_transaction.as_dict(), 'v', 'r', 's')
-    if isinstance(unsigned_transaction, (UnsignedHarmonyTxData,
-                                        SignedHarmonyTxData)):
+    chain_naive_transaction = dissoc(unsigned_transaction.as_dict(), "v", "r", "s")
+    if isinstance(unsigned_transaction, (UnsignedHarmonyTxData, SignedHarmonyTxData)):
         serializer = SignedHarmonyTxData
     else:
         serializer = SignedEthereumTxData
     signed_transaction = serializer(v=v, r=r, s=s, **chain_naive_transaction)
     return rlp.encode(signed_transaction)
 
+
 def serialize_transaction(filled_transaction):
-    '''serialize a signed/unsigned transaction'''
-    if 'v' in filled_transaction:
-        if 'shardID' in filled_transaction:
+    """serialize a signed/unsigned transaction"""
+    if "v" in filled_transaction:
+        if "shardID" in filled_transaction:
             serializer = SignedHarmonyTxData
         else:
             serializer = SignedEthereumTxData
     else:
-        if 'shardID' in filled_transaction:
+        if "shardID" in filled_transaction:
             serializer = UnsignedHarmonyTxData
         else:
             serializer = UnsignedEthereumTxData
     for f, _ in serializer._meta.fields:
-        assert f in filled_transaction, f'Could not find {f} in transaction'
-    return serializer.from_dict({f: filled_transaction[f] for f, _ in serializer._meta.fields})
+        assert f in filled_transaction, f"Could not find {f} in transaction"
+    return serializer.from_dict(
+        {f: filled_transaction[f] for f, _ in serializer._meta.fields}
+    )
+
 
 def sanitize_transaction(transaction_dict, private_key):
-    '''remove the originating address from the dict and convert chainId to int'''
-    account = Account.from_key(private_key)                 # get account, from which you can derive public + private key
-    transaction_dict = transaction_dict.copy()              # do not alter the original dictionary
-    if 'from' in transaction_dict:
-        transaction_dict[ 'from' ] = convert_one_to_hex( transaction_dict[ 'from' ] )
-        if transaction_dict[ 'from' ] == account.address:   # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/account.py#L650
-            sanitized_transaction = dissoc(transaction_dict, 'from')
+    """remove the originating address from the dict and convert chainId to int"""
+    account = Account.from_key(
+        private_key
+    )  # get account, from which you can derive public + private key
+    transaction_dict = transaction_dict.copy()  # do not alter the original dictionary
+    if "from" in transaction_dict:
+        transaction_dict["from"] = convert_one_to_hex(transaction_dict["from"])
+        if (
+            transaction_dict["from"] == account.address
+        ):  # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/account.py#L650
+            sanitized_transaction = dissoc(transaction_dict, "from")
         else:
-            raise TypeError("from field must match key's %s, but it was %s" % (
+            raise TypeError(
+                "from field must match key's %s, but it was %s"
+                % (
                     account.address,
-                    transaction_dict['from'],
-                ))
-    if 'chainId' in transaction_dict:
-        transaction_dict[ 'chainId' ] = chain_id_to_int( transaction_dict[ 'chainId' ] )
+                    transaction_dict["from"],
+                )
+            )
+    if "chainId" in transaction_dict:
+        transaction_dict["chainId"] = chain_id_to_int(transaction_dict["chainId"])
     return account, transaction_dict
 
+
 def sign_transaction(transaction_dict, private_key) -> SignedTransaction:
     """
     Sign a (non-staking) transaction dictionary with the specified private key
@@ -171,24 +159,25 @@ def sign_transaction(transaction_dict, private_key) -> SignedTransaction:
     https://readthedocs.org/projects/eth-account/downloads/pdf/stable/
     """
     account, sanitized_transaction = sanitize_transaction(transaction_dict, private_key)
-    if 'to' in sanitized_transaction and sanitized_transaction[ 'to' ] is not None:
-        sanitized_transaction[ 'to' ] = convert_one_to_hex( sanitized_transaction[ 'to' ] )
-    filled_transaction = pipe(                              # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L39
+    if "to" in sanitized_transaction and sanitized_transaction["to"] is not None:
+        sanitized_transaction["to"] = convert_one_to_hex(sanitized_transaction["to"])
+    filled_transaction = pipe(  # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L39
         sanitized_transaction,
         dict,
         partial(merge, TRANSACTION_DEFAULTS),
         chain_id_to_v,
-        apply_formatters_to_dict(HARMONY_FORMATTERS)
+        apply_formatters_to_dict(HARMONY_FORMATTERS),
     )
     unsigned_transaction = serialize_transaction(filled_transaction)
     transaction_hash = unsigned_transaction.hash()
 
-    if isinstance(unsigned_transaction, (UnsignedEthereumTxData, UnsignedHarmonyTxData)):
-        chain_id = None             # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/signing.py#L26
+    if isinstance(
+        unsigned_transaction, (UnsignedEthereumTxData, UnsignedHarmonyTxData)
+    ):
+        chain_id = None  # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/signing.py#L26
     else:
         chain_id = unsigned_transaction.v
-    (v, r, s) = sign_transaction_hash(
-        account._key_obj, transaction_hash, chain_id)
+    (v, r, s) = sign_transaction_hash(account._key_obj, transaction_hash, chain_id)
     encoded_transaction = encode_transaction(unsigned_transaction, vrs=(v, r, s))
     signed_transaction_hash = keccak(encoded_transaction)
     return SignedTransaction(
diff --git a/pyhmy/staking.py b/pyhmy/staking.py
index 312f9d5..a70174a 100644
--- a/pyhmy/staking.py
+++ b/pyhmy/staking.py
@@ -1,18 +1,16 @@
-from .rpc.request import (
-    rpc_request
-)
+from .rpc.request import rpc_request
 
-from .exceptions import (
-    InvalidRPCReplyError
-)
+from .exceptions import InvalidRPCReplyError
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 ##################
 # Validator RPCs #
 ##################
-def get_all_validator_addresses(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+def get_all_validator_addresses(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of all created validator addresses on chain
 
@@ -37,13 +35,16 @@ def get_all_validator_addresses(endpoint=_default_endpoint, timeout=_default_tim
     -------------
     https://api.hmny.io/#69b93657-8d3c-4d20-9c9f-e51f08c9b3f5
     """
-    method = 'hmyv2_getAllValidatorAddresses'
+    method = "hmyv2_getAllValidatorAddresses"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_information(validator_addr, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_validator_information(
+    validator_addr, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get validator information for validator address
 
@@ -112,16 +113,19 @@ def get_validator_information(validator_addr, endpoint=_default_endpoint, timeou
     -------------
     https://api.hmny.io/#659ad999-14ca-4498-8f74-08ed347cab49
     """
-    method = 'hmyv2_getValidatorInformation'
-    params = [
-        validator_addr
-    ]
+    method = "hmyv2_getValidatorInformation"
+    params = [validator_addr]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_elected_validator_addresses(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_elected_validator_addresses(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of elected validator addresses
 
@@ -147,12 +151,13 @@ def get_elected_validator_addresses(endpoint=_default_endpoint, timeout=_default
     -------------
     https://api.hmny.io/#e90a6131-d67c-4110-96ef-b283d452632d
     """
-    method = 'hmyv2_getElectedValidatorAddresses'
+    method = "hmyv2_getElectedValidatorAddresses"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_validators(epoch, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
     """
     Get validators list for a particular epoch
@@ -183,16 +188,19 @@ def get_validators(epoch, endpoint=_default_endpoint, timeout=_default_timeout)
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L152
     """
-    method = 'hmyv2_getValidators'
-    params = [
-        epoch
-    ]
+    method = "hmyv2_getValidators"
+    params = [epoch]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_keys(epoch, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_validator_keys(
+    epoch, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get validator BLS keys in the committee for a particular epoch
 
@@ -218,16 +226,19 @@ def get_validator_keys(epoch, endpoint=_default_endpoint, timeout=_default_timeo
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L152
     """
-    method = 'hmyv2_getValidatorKeys'
-    params = [
-        epoch
-    ]
+    method = "hmyv2_getValidatorKeys"
+    params = [epoch]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_information_by_block_number(validator_addr, block_num, endpoint=_default_endpoint, timeout=_default_timeout):
+
+def get_validator_information_by_block_number(
+    validator_addr, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+):
     """
     Get validator information for validator address at a block
 
@@ -255,17 +266,19 @@ def get_validator_information_by_block_number(validator_addr, block_num, endpoin
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L319
     """
-    method = 'hmyv2_getValidatorInformationByBlockNumber'
-    params = [
-        validator_addr,
-        block_num
-    ]
+    method = "hmyv2_getValidatorInformationByBlockNumber"
+    params = [validator_addr, block_num]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_all_validator_information(page=0, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_all_validator_information(
+    page=0, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get validator information for all validators on chain
 
@@ -291,16 +304,19 @@ def get_all_validator_information(page=0, endpoint=_default_endpoint, timeout=_d
     -------------
     https://api.hmny.io/#df5f1631-7397-48e8-87b4-8dd873235b9c
     """
-    method = 'hmyv2_getAllValidatorInformation'
-    params = [
-        page
-    ]
+    method = "hmyv2_getAllValidatorInformation"
+    params = [page]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_self_delegation(address, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_validator_self_delegation(
+    address, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the amount self delegated by validator
 
@@ -326,16 +342,21 @@ def get_validator_self_delegation(address, endpoint=_default_endpoint, timeout=_
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L352
     """
-    method = 'hmyv2_getValidatorSelfDelegation'
-    params = [
-        address
-    ]
+    method = "hmyv2_getValidatorSelfDelegation"
+    params = [address]
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_validator_total_delegation(address, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_validator_total_delegation(
+    address, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get the total amount delegated t ovalidator (including self delegated)
 
@@ -361,16 +382,21 @@ def get_validator_total_delegation(address, endpoint=_default_endpoint, timeout=
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L379
     """
-    method = 'hmyv2_getValidatorTotalDelegation'
-    params = [
-        address
-    ]
+    method = "hmyv2_getValidatorTotalDelegation"
+    params = [address]
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_all_validator_information_by_block_number(block_num, page=0, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_all_validator_information_by_block_number(
+    block_num, page=0, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get validator information at block number for all validators on chain
 
@@ -399,20 +425,22 @@ def get_all_validator_information_by_block_number(block_num, page=0, endpoint=_d
     -------------
     https://api.hmny.io/#a229253f-ca76-4b9d-88f5-9fd96e40d583
     """
-    method = 'hmyv2_getAllValidatorInformationByBlockNumber'
-    params = [
-        page,
-        block_num
-    ]
+    method = "hmyv2_getAllValidatorInformationByBlockNumber"
+    params = [page, block_num]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ###################
 # Delegation RPCs #
 ###################
-def get_all_delegation_information(page=0, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+def get_all_delegation_information(
+    page=0, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get delegation information for all delegators on chain
 
@@ -440,16 +468,21 @@ def get_all_delegation_information(page=0, endpoint=_default_endpoint, timeout=_
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L413
     """
-    method = 'hmyv2_getAllDelegationInformation'
+    method = "hmyv2_getAllDelegationInformation"
     params = [
         page,
     ]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_delegations_by_delegator(delegator_addr, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_delegations_by_delegator(
+    delegator_addr, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of delegations by a delegator
 
@@ -482,16 +515,19 @@ def get_delegations_by_delegator(delegator_addr, endpoint=_default_endpoint, tim
     -------------
     https://api.hmny.io/#454b032c-6072-4ecb-bf24-38b3d6d2af69
     """
-    method = 'hmyv2_getDelegationsByDelegator'
-    params = [
-        delegator_addr
-    ]
+    method = "hmyv2_getDelegationsByDelegator"
+    params = [delegator_addr]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_delegations_by_delegator_by_block_number(delegator_addr, block_num, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_delegations_by_delegator_by_block_number(
+    delegator_addr, block_num, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of delegations by a delegator at a specific block
 
@@ -519,18 +555,22 @@ def get_delegations_by_delegator_by_block_number(delegator_addr, block_num, endp
     -------------
     https://api.hmny.io/#8ce13bda-e768-47b9-9dbe-193aba410b0a
     """
-    method = 'hmyv2_getDelegationsByDelegatorByBlockNumber'
-    params = [
-        delegator_addr,
-        block_num
-    ]
+    method = "hmyv2_getDelegationsByDelegatorByBlockNumber"
+    params = [delegator_addr, block_num]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_delegation_by_delegator_and_validator(delegator_addr, validator_address,
-    endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_delegation_by_delegator_and_validator(
+    delegator_addr,
+    validator_address,
+    endpoint=_default_endpoint,
+    timeout=_default_timeout,
+) -> dict:
     """
     Get list of delegations by a delegator at a specific block
 
@@ -558,17 +598,19 @@ def get_delegation_by_delegator_and_validator(delegator_addr, validator_address,
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L605
     """
-    method = 'hmyv2_getDelegationByDelegatorAndValidator'
-    params = [
-        delegator_addr,
-        validator_address
-    ]
+    method = "hmyv2_getDelegationByDelegatorAndValidator"
+    params = [delegator_addr, validator_address]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_available_redelegation_balance(delegator_addr, endpoint=_default_endpoint, timeout=_default_timeout) -> int:
+
+def get_available_redelegation_balance(
+    delegator_addr, endpoint=_default_endpoint, timeout=_default_timeout
+) -> int:
     """
     Get amount of locked undelegated tokens
 
@@ -594,16 +636,21 @@ def get_available_redelegation_balance(delegator_addr, endpoint=_default_endpoin
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L653
     """
-    method = 'hmyv2_getAvailableRedelegationBalance'
-    params = [
-        delegator_addr
-    ]
+    method = "hmyv2_getAvailableRedelegationBalance"
+    params = [delegator_addr]
     try:
-        return int(rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result'])
+        return int(
+            rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+                "result"
+            ]
+        )
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_delegations_by_validator(validator_addr, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_delegations_by_validator(
+    validator_addr, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of delegations to a validator
 
@@ -629,19 +676,22 @@ def get_delegations_by_validator(validator_addr, endpoint=_default_endpoint, tim
     -------------
     https://api.hmny.io/#2e02d8db-8fec-41d9-a672-2c9862f63f39
     """
-    method = 'hmyv2_getDelegationsByValidator'
-    params = [
-        validator_addr
-    ]
+    method = "hmyv2_getDelegationsByValidator"
+    params = [validator_addr]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ########################
 # Staking Network RPCs #
 ########################
-def get_current_utility_metrics(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+def get_current_utility_metrics(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get current utility metrics of network
 
@@ -669,13 +719,16 @@ def get_current_utility_metrics(endpoint=_default_endpoint, timeout=_default_tim
     -------------
     https://api.hmny.io/#78dd2d94-9ff1-4e0c-bbac-b4eec1cdf10b
     """
-    method = 'hmyv2_getCurrentUtilityMetrics'
+    method = "hmyv2_getCurrentUtilityMetrics"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_staking_network_info(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_staking_network_info(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get staking network information
 
@@ -704,12 +757,13 @@ def get_staking_network_info(endpoint=_default_endpoint, timeout=_default_timeou
     -------------
     https://api.hmny.io/#4a10fce0-2aa4-4583-bdcb-81ee0800993b
     """
-    method = 'hmyv2_getStakingNetworkInfo'
+    method = "hmyv2_getStakingNetworkInfo"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_super_committees(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Get voting committees for current & previous epoch
@@ -757,12 +811,13 @@ def get_super_committees(endpoint=_default_endpoint, timeout=_default_timeout) -
     -------------
     https://api.hmny.io/#8eef2fc4-92db-4610-a9cd-f7b75cfbd080
     """
-    method = 'hmyv2_getSuperCommittees'
+    method = "hmyv2_getSuperCommittees"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_total_staking(endpoint=_default_endpoint, timeout=_default_timeout) -> int:
     """
     Get total staking by validators, only meant to be called on beaconchain
@@ -787,13 +842,16 @@ def get_total_staking(endpoint=_default_endpoint, timeout=_default_timeout) -> i
     -------------
     https://github.com/harmony-one/harmony/blob/1a8494c069dc3f708fdf690456713a2411465199/rpc/staking.go#L102
     """
-    method = 'hmyv2_getTotalStaking'
+    method = "hmyv2_getTotalStaking"
     try:
-        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)['result'])
+        return int(rpc_request(method, endpoint=endpoint, timeout=timeout)["result"])
     except (KeyError, TypeError) as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_raw_median_stake_snapshot(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_raw_median_stake_snapshot(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get median stake & additional committee data of the current epoch
 
@@ -830,8 +888,8 @@ def get_raw_median_stake_snapshot(endpoint=_default_endpoint, timeout=_default_t
     -------------
     https://api.hmny.io/#bef93b3f-6763-4121-9c17-f0b0d9e5cc40
     """
-    method = 'hmyv2_getMedianRawStakeSnapshot'
+    method = "hmyv2_getMedianRawStakeSnapshot"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
diff --git a/pyhmy/staking_signing.py b/pyhmy/staking_signing.py
index afa5b52..03c96c6 100644
--- a/pyhmy/staking_signing.py
+++ b/pyhmy/staking_signing.py
@@ -6,29 +6,19 @@ from cytoolz import (
     identity,
 )
 
-from hexbytes import (
-    HexBytes
-)
+from hexbytes import HexBytes
 
 import rlp
 
 import math
 
-from decimal import (
-    Decimal
-)
+from decimal import Decimal
 
-from eth_account.datastructures import (
-    SignedTransaction
-)
+from eth_account.datastructures import SignedTransaction
 
-from eth_account._utils.signing import (
-    sign_transaction_hash
-)
+from eth_account._utils.signing import sign_transaction_hash
 
-from eth_account._utils.legacy_transactions import (
-    chain_id_to_v
-)
+from eth_account._utils.legacy_transactions import chain_id_to_v
 
 from eth_utils.curried import (
     hexstr_if_str,
@@ -37,12 +27,10 @@ from eth_utils.curried import (
     apply_formatters_to_dict,
     to_int,
     apply_formatters_to_sequence,
-    apply_formatter_to_array
+    apply_formatter_to_array,
 )
 
-from .signing import (
-    sanitize_transaction
-)
+from .signing import sanitize_transaction
 
 from .staking_structures import (
     FORMATTERS,
@@ -51,14 +39,15 @@ from .staking_structures import (
     CreateValidator,
     EditValidator,
     DelegateOrUndelegate,
-    CollectRewards
+    CollectRewards,
 )
 
-from .util import (
-    convert_one_to_hex
-)
+from .util import convert_one_to_hex
+
 
-def _convert_staking_percentage_to_number(value):        # https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L335
+def _convert_staking_percentage_to_number(
+    value,
+):  # https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L335
     """
     Convert from staking percentage to integer
     For example, 0.1 becomes 1000000000000000000
@@ -77,38 +66,43 @@ def _convert_staking_percentage_to_number(value):        # https://github.com/ha
     AssertionError, if data types are not as expected
     ValueError, if the input type is not supported
     """
-    assert isinstance(value, (str, Decimal)), 'Only strings or decimals are supported'
+    assert isinstance(value, (str, Decimal)), "Only strings or decimals are supported"
     if isinstance(value, Decimal):
         value = str(value)
-    value1 = value;
-    if value[0] == '-':
-        raise ValueError('Negative numbers are not accepted')
-    if value[0] == '+':
+    value1 = value
+    if value[0] == "-":
+        raise ValueError("Negative numbers are not accepted")
+    if value[0] == "+":
         value1 = value[1:]
     if len(value1) == 0:
-        raise ValueError('StakingDecimal string is empty')
-    spaced = value1.split(' ')
+        raise ValueError("StakingDecimal string is empty")
+    spaced = value1.split(" ")
     if len(spaced) > 1:
-        raise ValueError('Bad decimal string')
-    splitted = value1.split('.')
+        raise ValueError("Bad decimal string")
+    splitted = value1.split(".")
     combined_str = splitted[0]
     if len(splitted) == 2:
         length = len(splitted[1])
         if length == 0 or len(combined_str) == 0:
-            raise ValueError('Bad StakingDecimal length')
-        if splitted[1][0] == '-':
-            raise ValueError('Bad StakingDecimal string')
+            raise ValueError("Bad StakingDecimal length")
+        if splitted[1][0] == "-":
+            raise ValueError("Bad StakingDecimal string")
         combined_str += splitted[1]
     elif len(splitted) > 2:
-        raise ValueError('Too many periods to be a StakingDecimal string')
+        raise ValueError("Too many periods to be a StakingDecimal string")
     if length > StakingSettings.PRECISION:
-        raise ValueError('Too much precision, must be less than {StakingSettings.PRECISION}')
+        raise ValueError(
+            "Too much precision, must be less than {StakingSettings.PRECISION}"
+        )
     zeroes_to_add = StakingSettings.PRECISION - length
-    combined_str += '0' * zeroes_to_add             # This will not have any periods, so it is effectively a large integer
+    combined_str += (
+        "0" * zeroes_to_add
+    )  # This will not have any periods, so it is effectively a large integer
     val = int(combined_str)
-    assert val <= StakingSettings.MAX_DECIMAL, 'Staking percentage is too large'
+    assert val <= StakingSettings.MAX_DECIMAL, "Staking percentage is too large"
     return val
 
+
 def _get_account_and_transaction(transaction_dict, private_key):
     """
     Create account from private key and sanitize the transaction
@@ -132,10 +126,15 @@ def _get_account_and_transaction(transaction_dict, private_key):
     AssertionError, if chainId is not present in util.chain_id_to_int
     TypeError, if the value of 'from' key is not the same as account address
     """
-    account, sanitized_transaction = sanitize_transaction(transaction_dict, private_key)    # remove from, convert chain id (if present) to integer
-    sanitized_transaction['directive'] = sanitized_transaction['directive'].value           # convert to value, like in TypeScript
+    account, sanitized_transaction = sanitize_transaction(
+        transaction_dict, private_key
+    )  # remove from, convert chain id (if present) to integer
+    sanitized_transaction["directive"] = sanitized_transaction[
+        "directive"
+    ].value  # convert to value, like in TypeScript
     return account, sanitized_transaction
 
+
 def _sign_transaction_generic(account, sanitized_transaction, parent_serializer):
     """
     Sign a generic staking transaction, given the serializer base class and account
@@ -157,39 +156,54 @@ def _sign_transaction_generic(account, sanitized_transaction, parent_serializer)
     rlp.exceptions.ObjectSerializationError, if data types are not as expected
     """
     # obtain the serializers
-    if sanitized_transaction.get('chainId', 0) == 0:
-        unsigned_serializer, signed_serializer = parent_serializer.Unsigned(), parent_serializer.Signed()                 # unsigned, signed
+    if sanitized_transaction.get("chainId", 0) == 0:
+        unsigned_serializer, signed_serializer = (
+            parent_serializer.Unsigned(),
+            parent_serializer.Signed(),
+        )  # unsigned, signed
     else:
-        unsigned_serializer, signed_serializer = parent_serializer.SignedChainId(), parent_serializer.SignedChainId()     # since chain_id_to_v adds v/r/s, unsigned is not used here
+        unsigned_serializer, signed_serializer = (
+            parent_serializer.SignedChainId(),
+            parent_serializer.SignedChainId(),
+        )  # since chain_id_to_v adds v/r/s, unsigned is not used here
     # fill the transaction
-    filled_transaction = pipe(                                                                                            # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L39
+    filled_transaction = pipe(  # https://github.com/ethereum/eth-account/blob/00e7b10005c5fa7090086fcef37a76296c524e17/eth_account/_utils/transactions.py#L39
         sanitized_transaction,
         dict,
-        partial(merge, {'chainId': None}),
-        chain_id_to_v,                                                                                                    # will move chain id to v and add v/r/s
-        apply_formatters_to_dict(FORMATTERS)
+        partial(merge, {"chainId": None}),
+        chain_id_to_v,  # will move chain id to v and add v/r/s
+        apply_formatters_to_dict(FORMATTERS),
     )
     # get the unsigned transaction
     for f, _ in unsigned_serializer._meta.fields:
-        assert f in filled_transaction, f'Could not find {f} in transaction'
-    unsigned_transaction = unsigned_serializer.from_dict(\
-        {f: filled_transaction[f] for f, _ in unsigned_serializer._meta.fields})                                          # drop extras silently
+        assert f in filled_transaction, f"Could not find {f} in transaction"
+    unsigned_transaction = unsigned_serializer.from_dict(
+        {f: filled_transaction[f] for f, _ in unsigned_serializer._meta.fields}
+    )  # drop extras silently
     # sign the unsigned transaction
-    if 'v' in unsigned_transaction.as_dict():
+    if "v" in unsigned_transaction.as_dict():
         chain_id = unsigned_transaction.v
     else:
         chain_id = None
     transaction_hash = unsigned_transaction.hash()
-    (v, r, s) = sign_transaction_hash(
-        account._key_obj, transaction_hash, chain_id)
+    (v, r, s) = sign_transaction_hash(account._key_obj, transaction_hash, chain_id)
     chain_naive_transaction = dissoc(
-        unsigned_transaction.as_dict(), 'v', 'r', 's')                                                                    # remove extra v/r/s added by chain_id_to_v
+        unsigned_transaction.as_dict(), "v", "r", "s"
+    )  # remove extra v/r/s added by chain_id_to_v
     # serialize it
     signed_transaction = signed_serializer(
-        v=v + (8 if chain_id is None else 0),               # copied from https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L207
+        v=v
+        + (
+            8 if chain_id is None else 0
+        ),  # copied from https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L207
         r=r,
-        s=s,                                                # in the below statement, remove everything not expected by signed_serializer
-        **{f: chain_naive_transaction[f] for f, _ in signed_serializer._meta.fields if f not in 'vrs'})
+        s=s,  # in the below statement, remove everything not expected by signed_serializer
+        **{
+            f: chain_naive_transaction[f]
+            for f, _ in signed_serializer._meta.fields
+            if f not in "vrs"
+        },
+    )
     # encode it
     encoded_transaction = rlp.encode(signed_transaction)
     # hash it
@@ -203,29 +217,34 @@ def _sign_transaction_generic(account, sanitized_transaction, parent_serializer)
         v=v,
     )
 
+
 def _sign_delegate_or_undelegate(transaction_dict, private_key, delegate):
     """
     Sign a delegate or undelegate transaction
     See sign_staking_transaction for details
     """
     # preliminary steps
-    if transaction_dict['directive'] not in [ Directive.Delegate, Directive.Undelegate ]:
-        raise TypeError('Only Delegate or Undelegate are supported by _sign_delegate_or_undelegate')
+    if transaction_dict["directive"] not in [Directive.Delegate, Directive.Undelegate]:
+        raise TypeError(
+            "Only Delegate or Undelegate are supported by _sign_delegate_or_undelegate"
+        )
     # first common step
-    account, sanitized_transaction = _get_account_and_transaction(transaction_dict, private_key)
+    account, sanitized_transaction = _get_account_and_transaction(
+        transaction_dict, private_key
+    )
     # encode the stakeMsg
-    sanitized_transaction['stakeMsg'] = \
-        apply_formatters_to_sequence( [
-            hexstr_if_str(to_bytes),
-            hexstr_if_str(to_bytes),
-            hexstr_if_str(to_int)
-        ], [
-            convert_one_to_hex(sanitized_transaction.pop('delegatorAddress')),
-            convert_one_to_hex(sanitized_transaction.pop('validatorAddress')),
-            sanitized_transaction.pop('amount'),
-            ]
-        )
-    return _sign_transaction_generic(account, sanitized_transaction, DelegateOrUndelegate)
+    sanitized_transaction["stakeMsg"] = apply_formatters_to_sequence(
+        [hexstr_if_str(to_bytes), hexstr_if_str(to_bytes), hexstr_if_str(to_int)],
+        [
+            convert_one_to_hex(sanitized_transaction.pop("delegatorAddress")),
+            convert_one_to_hex(sanitized_transaction.pop("validatorAddress")),
+            sanitized_transaction.pop("amount"),
+        ],
+    )
+    return _sign_transaction_generic(
+        account, sanitized_transaction, DelegateOrUndelegate
+    )
+
 
 def _sign_collect_rewards(transaction_dict, private_key):
     """
@@ -233,109 +252,147 @@ def _sign_collect_rewards(transaction_dict, private_key):
     See sign_staking_transaction for details
     """
     # preliminary steps
-    if transaction_dict['directive'] != Directive.CollectRewards:
-        raise TypeError('Only CollectRewards is supported by _sign_collect_rewards')
+    if transaction_dict["directive"] != Directive.CollectRewards:
+        raise TypeError("Only CollectRewards is supported by _sign_collect_rewards")
     # first common step
-    account, sanitized_transaction = _get_account_and_transaction(transaction_dict, private_key)
+    account, sanitized_transaction = _get_account_and_transaction(
+        transaction_dict, private_key
+    )
     # encode the stakeMsg
-    sanitized_transaction['stakeMsg'] = \
-        [hexstr_if_str(to_bytes)(convert_one_to_hex(sanitized_transaction.pop('delegatorAddress')))]
+    sanitized_transaction["stakeMsg"] = [
+        hexstr_if_str(to_bytes)(
+            convert_one_to_hex(sanitized_transaction.pop("delegatorAddress"))
+        )
+    ]
     return _sign_transaction_generic(account, sanitized_transaction, CollectRewards)
 
+
 def _sign_create_validator(transaction_dict, private_key):
     """
     Sign a create validator transaction
     See sign_staking_transaction for details
     """
     # preliminary steps
-    if transaction_dict['directive'] != Directive.CreateValidator:
-        raise TypeError('Only CreateValidator is supported by _sign_create_or_edit_validator')
+    if transaction_dict["directive"] != Directive.CreateValidator:
+        raise TypeError(
+            "Only CreateValidator is supported by _sign_create_or_edit_validator"
+        )
     # first common step
-    account, sanitized_transaction = _get_account_and_transaction(transaction_dict, private_key)
+    account, sanitized_transaction = _get_account_and_transaction(
+        transaction_dict, private_key
+    )
     # encode the stakeMsg
     description = [
-            sanitized_transaction.pop('name'),
-            sanitized_transaction.pop('identity'),
-            sanitized_transaction.pop('website'),
-            sanitized_transaction.pop('security-contact'),
-            sanitized_transaction.pop('details'),
-        ]
-    commission = apply_formatter_to_array( hexstr_if_str(to_int),       # formatter
+        sanitized_transaction.pop("name"),
+        sanitized_transaction.pop("identity"),
+        sanitized_transaction.pop("website"),
+        sanitized_transaction.pop("security-contact"),
+        sanitized_transaction.pop("details"),
+    ]
+    commission = apply_formatter_to_array(
+        hexstr_if_str(to_int),  # formatter
         [
-            _convert_staking_percentage_to_number(sanitized_transaction.pop('rate')),
-            _convert_staking_percentage_to_number(sanitized_transaction.pop('max-rate')),
-            _convert_staking_percentage_to_number(sanitized_transaction.pop('max-change-rate')),
-        ]
+            _convert_staking_percentage_to_number(sanitized_transaction.pop("rate")),
+            _convert_staking_percentage_to_number(
+                sanitized_transaction.pop("max-rate")
+            ),
+            _convert_staking_percentage_to_number(
+                sanitized_transaction.pop("max-change-rate")
+            ),
+        ],
     )
-    commission = [ [element] for element in commission ]
-    bls_keys = apply_formatter_to_array( hexstr_if_str(to_bytes),       # formatter
-        sanitized_transaction.pop('bls-public-keys')
+    commission = [[element] for element in commission]
+    bls_keys = apply_formatter_to_array(
+        hexstr_if_str(to_bytes),  # formatter
+        sanitized_transaction.pop("bls-public-keys"),
     )
-    bls_key_sigs = apply_formatter_to_array( hexstr_if_str(to_bytes),       # formatter
-        sanitized_transaction.pop('bls-key-sigs')
+    bls_key_sigs = apply_formatter_to_array(
+        hexstr_if_str(to_bytes), sanitized_transaction.pop("bls-key-sigs")  # formatter
     )
-    sanitized_transaction['stakeMsg'] = \
-        apply_formatters_to_sequence( [
-            hexstr_if_str(to_bytes),        # address
-            identity,                       # description
-            identity,                       # commission rates
-            hexstr_if_str(to_int),          # min self delegation (in ONE), decimals are silently dropped
-            hexstr_if_str(to_int),          # max total delegation (in ONE), decimals are silently dropped
-            identity,                       # bls public keys
-            identity,                       # bls key sigs
-            hexstr_if_str(to_int),          # amount (the Hexlify in the SDK drops the decimals, which is what we will do too)
-        ], [
-            convert_one_to_hex(sanitized_transaction.pop('validatorAddress')),
+    sanitized_transaction["stakeMsg"] = apply_formatters_to_sequence(
+        [
+            hexstr_if_str(to_bytes),  # address
+            identity,  # description
+            identity,  # commission rates
+            hexstr_if_str(
+                to_int
+            ),  # min self delegation (in ONE), decimals are silently dropped
+            hexstr_if_str(
+                to_int
+            ),  # max total delegation (in ONE), decimals are silently dropped
+            identity,  # bls public keys
+            identity,  # bls key sigs
+            hexstr_if_str(
+                to_int
+            ),  # amount (the Hexlify in the SDK drops the decimals, which is what we will do too)
+        ],
+        [
+            convert_one_to_hex(sanitized_transaction.pop("validatorAddress")),
             description,
             commission,
-            math.floor(sanitized_transaction.pop('min-self-delegation')),       # Decimal floors it correctly
-            math.floor(sanitized_transaction.pop('max-total-delegation')),
+            math.floor(
+                sanitized_transaction.pop("min-self-delegation")
+            ),  # Decimal floors it correctly
+            math.floor(sanitized_transaction.pop("max-total-delegation")),
             bls_keys,
             bls_key_sigs,
-            math.floor(sanitized_transaction.pop('amount')),
-            ]
-        )
+            math.floor(sanitized_transaction.pop("amount")),
+        ],
+    )
     return _sign_transaction_generic(account, sanitized_transaction, CreateValidator)
 
+
 def _sign_edit_validator(transaction_dict, private_key):
     """
     Sign an edit validator transaction
     See sign_staking_transaction for details
     """
     # preliminary steps
-    if transaction_dict['directive'] != Directive.EditValidator:
-        raise TypeError('Only EditValidator is supported by _sign_create_or_edit_validator')
+    if transaction_dict["directive"] != Directive.EditValidator:
+        raise TypeError(
+            "Only EditValidator is supported by _sign_create_or_edit_validator"
+        )
     # first common step
-    account, sanitized_transaction = _get_account_and_transaction(transaction_dict, private_key)
+    account, sanitized_transaction = _get_account_and_transaction(
+        transaction_dict, private_key
+    )
     # encode the stakeMsg
     description = [
-            sanitized_transaction.pop('name'),
-            sanitized_transaction.pop('identity'),
-            sanitized_transaction.pop('website'),
-            sanitized_transaction.pop('security-contact'),
-            sanitized_transaction.pop('details'),
-        ]
-    sanitized_transaction['stakeMsg'] = \
-        apply_formatters_to_sequence( [
-            hexstr_if_str(to_bytes),        # address
-            identity,                       # description
-            identity,                       # new rate (it's in a list so can't do hexstr_if_str)
-            hexstr_if_str(to_int),          # min self delegation (in ONE), decimals are silently dropped
-            hexstr_if_str(to_int),          # max total delegation (in ONE), decimals are silently dropped
-            hexstr_if_str(to_bytes),        # key to remove
-            hexstr_if_str(to_bytes),        # key to add
-        ], [
-            convert_one_to_hex(sanitized_transaction.pop('validatorAddress')),
+        sanitized_transaction.pop("name"),
+        sanitized_transaction.pop("identity"),
+        sanitized_transaction.pop("website"),
+        sanitized_transaction.pop("security-contact"),
+        sanitized_transaction.pop("details"),
+    ]
+    sanitized_transaction["stakeMsg"] = apply_formatters_to_sequence(
+        [
+            hexstr_if_str(to_bytes),  # address
+            identity,  # description
+            identity,  # new rate (it's in a list so can't do hexstr_if_str)
+            hexstr_if_str(
+                to_int
+            ),  # min self delegation (in ONE), decimals are silently dropped
+            hexstr_if_str(
+                to_int
+            ),  # max total delegation (in ONE), decimals are silently dropped
+            hexstr_if_str(to_bytes),  # key to remove
+            hexstr_if_str(to_bytes),  # key to add
+        ],
+        [
+            convert_one_to_hex(sanitized_transaction.pop("validatorAddress")),
             description,
-            [ _convert_staking_percentage_to_number(sanitized_transaction.pop('rate')) ],
-            math.floor(sanitized_transaction.pop('min-self-delegation')),       # Decimal floors it correctly
-            math.floor(sanitized_transaction.pop('max-total-delegation')),
-            sanitized_transaction.pop('bls-key-to-remove'),
-            sanitized_transaction.pop('bls-key-to-add')
-            ]
-        )
+            [_convert_staking_percentage_to_number(sanitized_transaction.pop("rate"))],
+            math.floor(
+                sanitized_transaction.pop("min-self-delegation")
+            ),  # Decimal floors it correctly
+            math.floor(sanitized_transaction.pop("max-total-delegation")),
+            sanitized_transaction.pop("bls-key-to-remove"),
+            sanitized_transaction.pop("bls-key-to-add"),
+        ],
+    )
     return _sign_transaction_generic(account, sanitized_transaction, EditValidator)
 
+
 def sign_staking_transaction(transaction_dict, private_key):
     """
     Sign a supplied transaction_dict with the private_key
@@ -404,18 +461,22 @@ def sign_staking_transaction(transaction_dict, private_key):
     -------------
     https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts
     """
-    assert isinstance(transaction_dict, dict), 'Only dictionaries are supported'        # OrderedDict is a subclass
+    assert isinstance(
+        transaction_dict, dict
+    ), "Only dictionaries are supported"  # OrderedDict is a subclass
     # chain_id missing => 'rlp: input string too long for uint64, decoding into (types.StakingTransaction)(types.txdata).GasLimit'
-    assert 'chainId' in transaction_dict, 'chainId missing'
-    assert 'directive' in transaction_dict, 'Staking transaction type not specified'
-    assert isinstance(transaction_dict['directive'], Directive), 'Unknown staking transaction type'
-    if transaction_dict['directive'] == Directive.CollectRewards:
+    assert "chainId" in transaction_dict, "chainId missing"
+    assert "directive" in transaction_dict, "Staking transaction type not specified"
+    assert isinstance(
+        transaction_dict["directive"], Directive
+    ), "Unknown staking transaction type"
+    if transaction_dict["directive"] == Directive.CollectRewards:
         return _sign_collect_rewards(transaction_dict, private_key)
-    elif transaction_dict['directive'] == Directive.Delegate:
+    elif transaction_dict["directive"] == Directive.Delegate:
         return _sign_delegate_or_undelegate(transaction_dict, private_key, True)
-    elif transaction_dict['directive'] == Directive.Undelegate:
+    elif transaction_dict["directive"] == Directive.Undelegate:
         return _sign_delegate_or_undelegate(transaction_dict, private_key, False)
-    elif transaction_dict['directive'] == Directive.CreateValidator:
+    elif transaction_dict["directive"] == Directive.CreateValidator:
         return _sign_create_validator(transaction_dict, private_key)
-    elif transaction_dict['directive'] == Directive.EditValidator:
+    elif transaction_dict["directive"] == Directive.EditValidator:
         return _sign_edit_validator(transaction_dict, private_key)
diff --git a/pyhmy/staking_structures.py b/pyhmy/staking_structures.py
index d8907f3..44f7102 100644
--- a/pyhmy/staking_structures.py
+++ b/pyhmy/staking_structures.py
@@ -1,219 +1,294 @@
-from enum import (
-    Enum,
-    auto
-)
+from enum import Enum, auto
 
-from rlp.sedes import (
-    big_endian_int,
-    Binary,
-    CountableList,
-    List,
-    Text
-)
+from rlp.sedes import big_endian_int, Binary, CountableList, List, Text
 
-from eth_rlp import (
-    HashableRLP
-)
+from eth_rlp import HashableRLP
 
 from eth_utils.curried import (
     to_int,
     hexstr_if_str,
 )
 
+
 class StakingSettings:
     PRECISION = 18
     MAX_DECIMAL = 1000000000000000000
 
-class Directive(Enum):      # https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L120
+
+class Directive(
+    Enum
+):  # https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L120
     def _generate_next_value_(name, start, count, last_values):
         return count
+
     CreateValidator = auto()
     EditValidator = auto()
     Delegate = auto()
     Undelegate = auto()
     CollectRewards = auto()
 
+
 FORMATTERS = {
-    'directive': hexstr_if_str(to_int),     # delegatorAddress is already formatted before the call
-    'nonce': hexstr_if_str(to_int),
-    'gasPrice': hexstr_if_str(to_int),
-    'gasLimit': hexstr_if_str(to_int),
-    'chainId': hexstr_if_str(to_int),
+    "directive": hexstr_if_str(
+        to_int
+    ),  # delegatorAddress is already formatted before the call
+    "nonce": hexstr_if_str(to_int),
+    "gasPrice": hexstr_if_str(to_int),
+    "gasLimit": hexstr_if_str(to_int),
+    "chainId": hexstr_if_str(to_int),
 }
 
+
 class CollectRewards:
     @staticmethod
     def UnsignedChainId():
         class UnsignedChainId(HashableRLP):
             fields = (
-                ('directive', big_endian_int),
-                ('stakeMsg', CountableList(Binary.fixed_length(20, allow_empty=True))),
-                ('nonce', big_endian_int),
-                ('gasPrice', big_endian_int),
-                ('gasLimit', big_endian_int),
-                ('chainId', big_endian_int),
+                ("directive", big_endian_int),
+                ("stakeMsg", CountableList(Binary.fixed_length(20, allow_empty=True))),
+                ("nonce", big_endian_int),
+                ("gasPrice", big_endian_int),
+                ("gasLimit", big_endian_int),
+                ("chainId", big_endian_int),
             )
+
         return UnsignedChainId
 
     @staticmethod
     def SignedChainId():
         class SignedChainId(HashableRLP):
-            fields = CollectRewards.UnsignedChainId()._meta.fields[:-1] + ( # drop chainId
+            fields = CollectRewards.UnsignedChainId()._meta.fields[
+                :-1
+            ] + (  # drop chainId
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return SignedChainId
 
     @staticmethod
     def Unsigned():
         class Unsigned(HashableRLP):
             fields = CollectRewards.UnsignedChainId()._meta.fields[:-1]  # drop chainId
+
         return Unsigned
 
     @staticmethod
     def Signed():
         class Signed(HashableRLP):
-            fields = CollectRewards.Unsigned()._meta.fields[:-3] + (    # drop last 3 for raw.pop()
+            fields = CollectRewards.Unsigned()._meta.fields[
+                :-3
+            ] + (  # drop last 3 for raw.pop()
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return Signed
 
+
 class DelegateOrUndelegate:
     @staticmethod
     def UnsignedChainId():
         class UnsignedChainId(HashableRLP):
             fields = (
-                ('directive', big_endian_int),
-                ('stakeMsg', List([Binary.fixed_length(20, allow_empty=True),Binary.fixed_length(20, allow_empty=True),big_endian_int],True)),
-                ('nonce', big_endian_int),
-                ('gasPrice', big_endian_int),
-                ('gasLimit', big_endian_int),
-                ('chainId', big_endian_int),
+                ("directive", big_endian_int),
+                (
+                    "stakeMsg",
+                    List(
+                        [
+                            Binary.fixed_length(20, allow_empty=True),
+                            Binary.fixed_length(20, allow_empty=True),
+                            big_endian_int,
+                        ],
+                        True,
+                    ),
+                ),
+                ("nonce", big_endian_int),
+                ("gasPrice", big_endian_int),
+                ("gasLimit", big_endian_int),
+                ("chainId", big_endian_int),
             )
+
         return UnsignedChainId
 
     @staticmethod
     def SignedChainId():
         class SignedChainId(HashableRLP):
-            fields = DelegateOrUndelegate.UnsignedChainId()._meta.fields[:-1] + ( # drop chainId
+            fields = DelegateOrUndelegate.UnsignedChainId()._meta.fields[
+                :-1
+            ] + (  # drop chainId
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return SignedChainId
 
     @staticmethod
     def Unsigned():
         class Unsigned(HashableRLP):
-            fields = DelegateOrUndelegate.UnsignedChainId()._meta.fields[:-1]  # drop chainId
+            fields = DelegateOrUndelegate.UnsignedChainId()._meta.fields[
+                :-1
+            ]  # drop chainId
+
         return Unsigned
 
     @staticmethod
     def Signed():
         class Signed(HashableRLP):
-            fields = DelegateOrUndelegate.Unsigned()._meta.fields[:-3] + (    # drop last 3 for raw.pop()
+            fields = DelegateOrUndelegate.Unsigned()._meta.fields[
+                :-3
+            ] + (  # drop last 3 for raw.pop()
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return Signed
 
+
 class CreateValidator:
     @staticmethod
     def UnsignedChainId():
         class UnsignedChainId(HashableRLP):
             fields = (
-                ('directive', big_endian_int),
-                ('stakeMsg', List([                                                         # list with the following members
-                            Binary.fixed_length(20, allow_empty=True),                      # validatorAddress
-                            List([Text()]*5,True),                                          # description is Text of 5 elements
-                            List([List([big_endian_int],True)]*3,True),                     # commission rate is made up of 3 integers in an array [ [int1], [int2], [int3] ]
-                            big_endian_int,                                                 # min self delegation
-                            big_endian_int,                                                 # max total delegation
-                            CountableList(Binary.fixed_length(48, allow_empty=True)),       # bls-public-keys array of unspecified length, each key of 48
-                            CountableList(Binary.fixed_length(96, allow_empty=True)),       # bls-key-sigs array of unspecified length, each sig of 96
-                            big_endian_int,                                                 # amount
-                         ], True)),                                                         # strictly these number of elements
-                ('nonce', big_endian_int),
-                ('gasPrice', big_endian_int),
-                ('gasLimit', big_endian_int),
-                ('chainId', big_endian_int),
+                ("directive", big_endian_int),
+                (
+                    "stakeMsg",
+                    List(
+                        [  # list with the following members
+                            Binary.fixed_length(
+                                20, allow_empty=True
+                            ),  # validatorAddress
+                            List(
+                                [Text()] * 5, True
+                            ),  # description is Text of 5 elements
+                            List(
+                                [List([big_endian_int], True)] * 3, True
+                            ),  # commission rate is made up of 3 integers in an array [ [int1], [int2], [int3] ]
+                            big_endian_int,  # min self delegation
+                            big_endian_int,  # max total delegation
+                            CountableList(
+                                Binary.fixed_length(48, allow_empty=True)
+                            ),  # bls-public-keys array of unspecified length, each key of 48
+                            CountableList(
+                                Binary.fixed_length(96, allow_empty=True)
+                            ),  # bls-key-sigs array of unspecified length, each sig of 96
+                            big_endian_int,  # amount
+                        ],
+                        True,
+                    ),
+                ),  # strictly these number of elements
+                ("nonce", big_endian_int),
+                ("gasPrice", big_endian_int),
+                ("gasLimit", big_endian_int),
+                ("chainId", big_endian_int),
             )
+
         return UnsignedChainId
 
     @staticmethod
     def SignedChainId():
         class SignedChainId(HashableRLP):
-            fields = CreateValidator.UnsignedChainId()._meta.fields[:-1] + ( # drop chainId
+            fields = CreateValidator.UnsignedChainId()._meta.fields[
+                :-1
+            ] + (  # drop chainId
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return SignedChainId
 
     @staticmethod
     def Unsigned():
         class Unsigned(HashableRLP):
             fields = CreateValidator.UnsignedChainId()._meta.fields[:-1]  # drop chainId
+
         return Unsigned
 
     @staticmethod
     def Signed():
         class Signed(HashableRLP):
-            fields = CreateValidator.Unsigned()._meta.fields[:-3] + (    # drop last 3 for raw.pop()
+            fields = CreateValidator.Unsigned()._meta.fields[
+                :-3
+            ] + (  # drop last 3 for raw.pop()
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return Signed
 
+
 class EditValidator:
     @staticmethod
     def UnsignedChainId():
         class UnsignedChainId(HashableRLP):
             fields = (
-                ('directive', big_endian_int),
-                ('stakeMsg', List([                                                         # list with the following members
-                            Binary.fixed_length(20, allow_empty=True),                      # validatorAddress
-                            List([Text()]*5,True),                                          # description is Text of 5 elements
-                            List([big_endian_int],True),                                    # new rate is in a list
-                            big_endian_int,                                                 # min self delegation
-                            big_endian_int,                                                 # max total delegation
-                            Binary.fixed_length(48, allow_empty=True),                      # slot key to remove
-                            Binary.fixed_length(48, allow_empty=True),                      # slot key to add
-                         ], True)),                                                         # strictly these number of elements
-                ('nonce', big_endian_int),
-                ('gasPrice', big_endian_int),
-                ('gasLimit', big_endian_int),
-                ('chainId', big_endian_int),
+                ("directive", big_endian_int),
+                (
+                    "stakeMsg",
+                    List(
+                        [  # list with the following members
+                            Binary.fixed_length(
+                                20, allow_empty=True
+                            ),  # validatorAddress
+                            List(
+                                [Text()] * 5, True
+                            ),  # description is Text of 5 elements
+                            List([big_endian_int], True),  # new rate is in a list
+                            big_endian_int,  # min self delegation
+                            big_endian_int,  # max total delegation
+                            Binary.fixed_length(
+                                48, allow_empty=True
+                            ),  # slot key to remove
+                            Binary.fixed_length(
+                                48, allow_empty=True
+                            ),  # slot key to add
+                        ],
+                        True,
+                    ),
+                ),  # strictly these number of elements
+                ("nonce", big_endian_int),
+                ("gasPrice", big_endian_int),
+                ("gasLimit", big_endian_int),
+                ("chainId", big_endian_int),
             )
+
         return UnsignedChainId
 
     @staticmethod
     def SignedChainId():
         class SignedChainId(HashableRLP):
-            fields = EditValidator.UnsignedChainId()._meta.fields[:-1] + ( # drop chainId
+            fields = EditValidator.UnsignedChainId()._meta.fields[
+                :-1
+            ] + (  # drop chainId
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return SignedChainId
 
     @staticmethod
     def Unsigned():
         class Unsigned(HashableRLP):
             fields = EditValidator.UnsignedChainId()._meta.fields[:-1]  # drop chainId
+
         return Unsigned
 
     @staticmethod
     def Signed():
         class Signed(HashableRLP):
-            fields = EditValidator.Unsigned()._meta.fields[:-3] + (    # drop last 3 for raw.pop()
+            fields = EditValidator.Unsigned()._meta.fields[
+                :-3
+            ] + (  # drop last 3 for raw.pop()
                 ("v", big_endian_int),
                 ("r", big_endian_int),
                 ("s", big_endian_int),
             )
+
         return Signed
diff --git a/pyhmy/transaction.py b/pyhmy/transaction.py
index 2e34914..b1c890c 100644
--- a/pyhmy/transaction.py
+++ b/pyhmy/transaction.py
@@ -1,21 +1,18 @@
-from .rpc.request import (
-    rpc_request
-)
-from .exceptions import (
-    TxConfirmationTimedoutError,
-    InvalidRPCReplyError
-)
+from .rpc.request import rpc_request
+from .exceptions import TxConfirmationTimedoutError, InvalidRPCReplyError
 import time
 import random
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 
 #########################
 # Transaction Pool RPCs #
 #########################
-def get_pending_transactions(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+def get_pending_transactions(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of pending transactions
 
@@ -39,13 +36,16 @@ def get_pending_transactions(endpoint=_default_endpoint, timeout=_default_timeou
     -------------
     https://api.hmny.io/#de6c4a12-fa42-44e8-972f-801bfde1dd18
     """
-    method = 'hmyv2_pendingTransactions'
+    method = "hmyv2_pendingTransactions"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transaction_error_sink(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_transaction_error_sink(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get current transactions error sink
 
@@ -72,13 +72,16 @@ def get_transaction_error_sink(endpoint=_default_endpoint, timeout=_default_time
     -------------
     https://api.hmny.io/#9aedbc22-6262-44b1-8276-cd8ae19fa600
     """
-    method = 'hmyv2_getCurrentTransactionErrorSink'
+    method = "hmyv2_getCurrentTransactionErrorSink"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_pending_staking_transactions(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def get_pending_staking_transactions(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of pending staking transactions
 
@@ -102,14 +105,16 @@ def get_pending_staking_transactions(endpoint=_default_endpoint, timeout=_defaul
     -------------
     https://api.hmny.io/#de0235e4-f4c9-4a69-b6d2-b77dc1ba7b12
     """
-    method = 'hmyv2_pendingStakingTransactions'
+    method = "hmyv2_pendingStakingTransactions"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
 
-def get_staking_transaction_error_sink(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+def get_staking_transaction_error_sink(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get current staking transactions error sink
 
@@ -137,12 +142,13 @@ def get_staking_transaction_error_sink(endpoint=_default_endpoint, timeout=_defa
     -------------
     https://api.hmny.io/#bdd00e0f-2ba0-480e-b996-2ef13f10d75a
     """
-    method = 'hmyv2_getCurrentStakingErrorSink'
+    method = "hmyv2_getCurrentStakingErrorSink"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 def get_pool_stats(endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
     """
     Get stats of the pool, that is, number of pending and queued (non-executable) transactions
@@ -169,16 +175,19 @@ def get_pool_stats(endpoint=_default_endpoint, timeout=_default_timeout) -> dict
     -------------
     https://api.hmny.io/#7c2b9395-8f5e-4eb5-a687-2f1be683d83e
     """
-    method = 'hmyv2_getPoolStats'
+    method = "hmyv2_getPoolStats"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ####################
 # Transaction RPCs #
 ####################
-def get_transaction_by_hash(tx_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+def get_transaction_by_hash(
+    tx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get transaction by hash
 
@@ -224,18 +233,19 @@ def get_transaction_by_hash(tx_hash, endpoint=_default_endpoint, timeout=_defaul
     -------------
     https://api.hmny.io/#117e84f6-a0ec-444e-abe0-455701310389
     """
-    method = 'hmyv2_getTransactionByHash'
-    params = [
-        tx_hash
-    ]
+    method = "hmyv2_getTransactionByHash"
+    params = [tx_hash]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transaction_by_block_hash_and_index(block_hash, tx_index,
-        endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> dict:
+
+def get_transaction_by_block_hash_and_index(
+    block_hash, tx_index, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get transaction based on index in list of transactions in a block by block hash
 
@@ -263,19 +273,19 @@ def get_transaction_by_block_hash_and_index(block_hash, tx_index,
     -------------
     https://api.hmny.io/#7c7e8d90-4984-4ebe-bb7e-d7adec167503
     """
-    method = 'hmyv2_getTransactionByBlockHashAndIndex'
-    params = [
-        block_hash,
-        tx_index
-    ]
+    method = "hmyv2_getTransactionByBlockHashAndIndex"
+    params = [block_hash, tx_index]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transaction_by_block_number_and_index(block_num, tx_index,
-        endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> dict:
+
+def get_transaction_by_block_number_and_index(
+    block_num, tx_index, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get transaction based on index in list of transactions in a block by block number
 
@@ -303,17 +313,19 @@ def get_transaction_by_block_number_and_index(block_num, tx_index,
     -------------
     https://api.hmny.io/#bcde8b1c-6ab9-4950-9835-3c7564e49c3e
     """
-    method = 'hmyv2_getTransactionByBlockNumberAndIndex'
-    params = [
-        block_num,
-        tx_index
-    ]
+    method = "hmyv2_getTransactionByBlockNumberAndIndex"
+    params = [block_num, tx_index]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_transaction_receipt(tx_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+
+def get_transaction_receipt(
+    tx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get transaction receipt corresponding to tx_hash
 
@@ -353,16 +365,19 @@ def get_transaction_receipt(tx_hash, endpoint=_default_endpoint, timeout=_defaul
     -------------
     https://api.hmny.io/#0c2799f8-bcdc-41a4-b362-c3a6a763bb5e
     """
-    method = 'hmyv2_getTransactionReceipt'
-    params = [
-        tx_hash
-    ]
+    method = "hmyv2_getTransactionReceipt"
+    params = [tx_hash]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def send_raw_transaction(signed_tx, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+
+def send_raw_transaction(
+    signed_tx, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Send signed transaction
 
@@ -391,16 +406,19 @@ def send_raw_transaction(signed_tx, endpoint=_default_endpoint, timeout=_default
     -------------
     https://api.hmny.io/#f40d124a-b897-4b7c-baf3-e0dedf8f40a0
     """
-    params = [
-        signed_tx
-    ]
-    method = 'hmyv2_sendRawTransaction'
+    params = [signed_tx]
+    method = "hmyv2_sendRawTransaction"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def send_and_confirm_raw_transaction(signed_tx, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def send_and_confirm_raw_transaction(
+    signed_tx, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Send signed transaction and wait for it to be confirmed
 
@@ -433,20 +451,23 @@ def send_and_confirm_raw_transaction(signed_tx, endpoint=_default_endpoint, time
     """
     tx_hash = send_raw_transaction(signed_tx, endpoint=endpoint)
     start_time = time.time()
-    while((time.time() - start_time) <= timeout):
+    while (time.time() - start_time) <= timeout:
         tx_response = get_transaction_by_hash(tx_hash, endpoint=endpoint)
         if tx_response is not None:
-            block_hash = tx_response.get( "blockHash", "0x00" )
-            unique_chars = "".join( set( list( block_hash[ 2 : ] ) ) )
+            block_hash = tx_response.get("blockHash", "0x00")
+            unique_chars = "".join(set(list(block_hash[2:])))
             if unique_chars != "0":
                 return tx_response
         time.sleep(random.uniform(0.2, 0.5))
     raise TxConfirmationTimedoutError("Could not confirm transaction on-chain.")
 
+
 ###############################
 # CrossShard Transaction RPCs #
 ###############################
-def get_pending_cx_receipts(endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+def get_pending_cx_receipts(
+    endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Get list of pending cross shard transactions
 
@@ -493,13 +514,16 @@ def get_pending_cx_receipts(endpoint=_default_endpoint, timeout=_default_timeout
     -------------
     https://api.hmny.io/#fe60070d-97b4-458d-9365-490b44c18851
     """
-    method = 'hmyv2_getPendingCXReceipts'
+    method = "hmyv2_getPendingCXReceipts"
     try:
-        return rpc_request(method, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, endpoint=endpoint, timeout=timeout)["result"]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_cx_receipt_by_hash(cx_hash, endpoint = _default_endpoint, timeout = _default_timeout) -> dict:
+
+def get_cx_receipt_by_hash(
+    cx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get cross shard receipt by hash on the receiving shard end point
 
@@ -534,16 +558,19 @@ def get_cx_receipt_by_hash(cx_hash, endpoint = _default_endpoint, timeout = _def
     -------------
     https://api.hmny.io/#3d6ad045-800d-4021-aeb5-30a0fbf724fe
     """
-    params = [
-        cx_hash
-    ]
-    method = 'hmyv2_getCXReceiptByHash'
+    params = [cx_hash]
+    method = "hmyv2_getCXReceiptByHash"
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def resend_cx_receipt(cx_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
+
+def resend_cx_receipt(
+    cx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> bool:
     """
     Resend the cross shard receipt to the receiving shard to re-process if the transaction did not pay out
 
@@ -570,19 +597,22 @@ def resend_cx_receipt(cx_hash, endpoint=_default_endpoint, timeout=_default_time
     -------------
     https://api.hmny.io/#c658b56b-d20b-480d-b71a-b0bc505d2164
     """
-    method = 'hmyv2_resendCx'
-    params = [
-        cx_hash
-    ]
+    method = "hmyv2_resendCx"
+    params = [cx_hash]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
+
 ############################
 # Staking Transaction RPCs #
 ############################
-def get_staking_transaction_by_hash(tx_hash, endpoint=_default_endpoint, timeout=_default_timeout) -> dict:
+def get_staking_transaction_by_hash(
+    tx_hash, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get staking transaction by hash
 
@@ -622,18 +652,19 @@ def get_staking_transaction_by_hash(tx_hash, endpoint=_default_endpoint, timeout
     -------------
     https://api.hmny.io/#296cb4d0-bce2-48e3-bab9-64c3734edd27
     """
-    method = 'hmyv2_getStakingTransactionByHash'
-    params = [
-        tx_hash
-    ]
+    method = "hmyv2_getStakingTransactionByHash"
+    params = [tx_hash]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_staking_transaction_by_block_hash_and_index(block_hash, tx_index,
-        endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> dict:
+
+def get_staking_transaction_by_block_hash_and_index(
+    block_hash, tx_index, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get staking transaction by block hash and transaction index
 
@@ -661,19 +692,19 @@ def get_staking_transaction_by_block_hash_and_index(block_hash, tx_index,
     -------------
     https://api.hmny.io/#ba96cf61-61fe-464a-aa06-2803bb4b358f
     """
-    method = 'hmyv2_getStakingTransactionByBlockHashAndIndex'
-    params = [
-        block_hash,
-        tx_index
-    ]
+    method = "hmyv2_getStakingTransactionByBlockHashAndIndex"
+    params = [block_hash, tx_index]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def get_staking_transaction_by_block_number_and_index(block_num, tx_index,
-        endpoint=_default_endpoint, timeout=_default_timeout
-    ) -> dict:
+
+def get_staking_transaction_by_block_number_and_index(
+    block_num, tx_index, endpoint=_default_endpoint, timeout=_default_timeout
+) -> dict:
     """
     Get staking transaction by block number and transaction index
 
@@ -701,17 +732,19 @@ def get_staking_transaction_by_block_number_and_index(block_num, tx_index,
     -------------
     https://api.hmny.io/#fb41d717-1645-4d3e-8071-6ce8e1b65dd3
     """
-    method = 'hmyv2_getStakingTransactionByBlockNumberAndIndex'
-    params = [
-        block_num,
-        tx_index
-    ]
+    method = "hmyv2_getStakingTransactionByBlockNumberAndIndex"
+    params = [block_num, tx_index]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def send_raw_staking_transaction(raw_tx, endpoint=_default_endpoint, timeout=_default_timeout) -> str:
+
+def send_raw_staking_transaction(
+    raw_tx, endpoint=_default_endpoint, timeout=_default_timeout
+) -> str:
     """
     Send signed staking transaction
 
@@ -740,16 +773,19 @@ def send_raw_staking_transaction(raw_tx, endpoint=_default_endpoint, timeout=_de
     -------------
     https://api.hmny.io/#e8c17fe9-e730-4c38-95b3-6f1a5b1b9401
     """
-    method = 'hmyv2_sendRawStakingTransaction'
-    params = [
-        raw_tx
-    ]
+    method = "hmyv2_sendRawStakingTransaction"
+    params = [raw_tx]
     try:
-        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)['result']
+        return rpc_request(method, params=params, endpoint=endpoint, timeout=timeout)[
+            "result"
+        ]
     except KeyError as e:
         raise InvalidRPCReplyError(method, endpoint) from e
 
-def send_and_confirm_raw_staking_transaction(signed_tx, endpoint=_default_endpoint, timeout=_default_timeout) -> list:
+
+def send_and_confirm_raw_staking_transaction(
+    signed_tx, endpoint=_default_endpoint, timeout=_default_timeout
+) -> list:
     """
     Send signed staking transaction and wait for it to be confirmed
 
@@ -782,12 +818,12 @@ def send_and_confirm_raw_staking_transaction(signed_tx, endpoint=_default_endpoi
     """
     tx_hash = send_raw_staking_transaction(signed_tx, endpoint=endpoint)
     start_time = time.time()
-    while((time.time() - start_time) <= timeout):
+    while (time.time() - start_time) <= timeout:
         tx_response = get_staking_transaction_by_hash(tx_hash, endpoint=endpoint)
         if tx_response is not None:
-            block_hash = tx_response.get( "blockHash", "0x00" )
-            unique_chars = "".join( set( list( block_hash[ 2 : ] ) ) )
+            block_hash = tx_response.get("blockHash", "0x00")
+            unique_chars = "".join(set(list(block_hash[2:])))
             if unique_chars != "0":
                 return tx_response
         time.sleep(random.uniform(0.2, 0.5))
-    raise TxConfirmationTimedoutError("Could not confirm transaction on-chain.")
\ No newline at end of file
+    raise TxConfirmationTimedoutError("Could not confirm transaction on-chain.")
diff --git a/pyhmy/util.py b/pyhmy/util.py
index 36c350f..d287821 100644
--- a/pyhmy/util.py
+++ b/pyhmy/util.py
@@ -6,9 +6,7 @@ import datetime
 
 import requests
 
-from .blockchain import (
-    get_latest_header
-)
+from .blockchain import get_latest_header
 
 from .rpc.exceptions import (
     RPCError,
@@ -16,63 +14,63 @@ from .rpc.exceptions import (
     RequestsTimeoutError,
 )
 
-from .account import (
-    is_valid_address
-)
+from .account import is_valid_address
 
-from .bech32.bech32 import (
-    bech32_decode,
-    bech32_encode,
-    convertbits
-)
+from .bech32.bech32 import bech32_decode, bech32_encode, convertbits
 
 from eth_utils import to_checksum_address
 
 datetime_format = "%Y-%m-%d %H:%M:%S.%f"
 
+
 class Typgpy(str):
     """
     Typography constants for pretty printing.
 
     Note that an ENDC is needed to mark the end of a 'highlighted' text segment.
     """
-    HEADER = '\033[95m'
-    OKBLUE = '\033[94m'
-    OKGREEN = '\033[92m'
-    WARNING = '\033[93m'
-    FAIL = '\033[91m'
-    ENDC = '\033[0m'
-    BOLD = '\033[1m'
-    UNDERLINE = '\033[4m'
+
+    HEADER = "\033[95m"
+    OKBLUE = "\033[94m"
+    OKGREEN = "\033[92m"
+    WARNING = "\033[93m"
+    FAIL = "\033[91m"
+    ENDC = "\033[0m"
+    BOLD = "\033[1m"
+    UNDERLINE = "\033[4m"
+
 
 def chain_id_to_int(chainId):
     chainIds = dict(
-        Default = 0,
-        EthMainnet = 1,
-        Morden = 2,
-        Ropsten = 3,
-        Rinkeby = 4,
-        RootstockMainnet = 30,
-        RootstockTestnet = 31,
-        Kovan = 42,
-        EtcMainnet = 61,
-        EtcTestnet = 62,
-        Geth = 1337,
-        Ganache = 0,
-        HmyMainnet = 1,
-        HmyTestnet = 2,
-        HmyLocal = 2,
-        HmyPangaea = 3,
+        Default=0,
+        EthMainnet=1,
+        Morden=2,
+        Ropsten=3,
+        Rinkeby=4,
+        RootstockMainnet=30,
+        RootstockTestnet=31,
+        Kovan=42,
+        EtcMainnet=61,
+        EtcTestnet=62,
+        Geth=1337,
+        Ganache=0,
+        HmyMainnet=1,
+        HmyTestnet=2,
+        HmyLocal=2,
+        HmyPangaea=3,
     )
 
     # do not validate integer chainids, only known strings
     if isinstance(chainId, str):
-        assert chainId in chainIds, f'Chain {chainId} unknown, specify an integer chainId'
+        assert (
+            chainId in chainIds
+        ), f"Chain {chainId} unknown, specify an integer chainId"
         return chainIds.get(chainId)
     elif isinstance(chainId, int):
         return chainId
     else:
-        raise TypeError( 'chainId must be str or int' )
+        raise TypeError("chainId must be str or int")
+
 
 def get_gopath():
     """
@@ -87,6 +85,7 @@ def get_goversion():
     """
     return subprocess.check_output(["go", "version"]).decode().strip()
 
+
 def convert_one_to_hex(addr):
     """
     Given a one address, convert it to hex checksum address
@@ -95,9 +94,10 @@ def convert_one_to_hex(addr):
         return to_checksum_address(addr)
     hrp, data = bech32_decode(addr)
     buf = convertbits(data, 5, 8, False)
-    address = '0x' + ''.join('{:02x}'.format(x) for x in buf)
+    address = "0x" + "".join("{:02x}".format(x) for x in buf)
     return to_checksum_address(address)
 
+
 def convert_hex_to_one(addr):
     """
     Given a hex address, convert it to a one address
@@ -105,10 +105,13 @@ def convert_hex_to_one(addr):
     if is_valid_address(addr):
         return addr
     checksum_addr = to_checksum_address(addr)
-    data = bytearray.fromhex(checksum_addr[2:] if checksum_addr.startswith("0x") else checksum_addr)
+    data = bytearray.fromhex(
+        checksum_addr[2:] if checksum_addr.startswith("0x") else checksum_addr
+    )
     buf = convertbits(data, 8, 5)
     return bech32_encode("one", buf)
 
+
 def is_active_shard(endpoint, delay_tolerance=60):
     """
     :param endpoint: The endpoint of the SHARD to check
@@ -118,8 +121,10 @@ def is_active_shard(endpoint, delay_tolerance=60):
     try:
         curr_time = datetime.datetime.utcnow()
         latest_header = get_latest_header(endpoint=endpoint)
-        time_str = latest_header["timestamp"][:19] + '.0'  # Fit time format
-        timestamp = datetime.datetime.strptime(time_str, "%Y-%m-%d %H:%M:%S.%f").replace(tzinfo=None)
+        time_str = latest_header["timestamp"][:19] + ".0"  # Fit time format
+        timestamp = datetime.datetime.strptime(
+            time_str, "%Y-%m-%d %H:%M:%S.%f"
+        ).replace(tzinfo=None)
         time_delta = curr_time - timestamp
         return abs(time_delta.seconds) < delay_tolerance
     except (RPCError, RequestsError, RequestsTimeoutError):
@@ -137,7 +142,12 @@ def get_bls_build_variables():
     """
     variables = {}
     try:
-        openssl_dir = subprocess.check_output(["which", "openssl"]).decode().strip().split("\n")[0]
+        openssl_dir = (
+            subprocess.check_output(["which", "openssl"])
+            .decode()
+            .strip()
+            .split("\n")[0]
+        )
     except (IndexError, subprocess.CalledProcessError) as e:
         raise RuntimeError("`openssl` not found") from e
     hmy_path = f"{get_gopath()}/src/github.com/harmony-one"
@@ -146,7 +156,9 @@ def get_bls_build_variables():
     assert os.path.exists(bls_dir), f"Harmony BLS repo not found at {bls_dir}"
     assert os.path.exists(mcl_dir), f"Harmony MCL repo not found at {mcl_dir}"
     if sys.platform.startswith("darwin"):
-        variables["CGO_CFLAGS"] = f"-I{bls_dir}/include -I{mcl_dir}/include -I{openssl_dir}/include"
+        variables[
+            "CGO_CFLAGS"
+        ] = f"-I{bls_dir}/include -I{mcl_dir}/include -I{openssl_dir}/include"
         variables["CGO_LDFLAGS"] = f"-L{bls_dir}/lib -L{openssl_dir}/lib"
         variables["LD_LIBRARY_PATH"] = f"{bls_dir}/lib:{mcl_dir}/lib:{openssl_dir}/lib"
         variables["DYLD_FALLBACK_LIBRARY_PATH"] = variables["LD_LIBRARY_PATH"]
diff --git a/pyhmy/validator.py b/pyhmy/validator.py
index ccc2b14..c2178fc 100644
--- a/pyhmy/validator.py
+++ b/pyhmy/validator.py
@@ -1,44 +1,27 @@
 import json
 
-from eth_account.datastructures import (
-    SignedTransaction
-)
+from eth_account.datastructures import SignedTransaction
 
-from decimal import (
-    Decimal,
-    InvalidOperation
-)
+from decimal import Decimal, InvalidOperation
 
-from .account import (
-    get_balance,
-    is_valid_address
-)
+from .account import get_balance, is_valid_address
 
-from .numbers import (
-    convert_one_to_atto
-)
+from .numbers import convert_one_to_atto
 
 from .exceptions import (
     InvalidValidatorError,
     RPCError,
     RequestsError,
-    RequestsTimeoutError
+    RequestsTimeoutError,
 )
 
-from .staking import (
-    get_all_validator_addresses,
-    get_validator_information
-)
+from .staking import get_all_validator_addresses, get_validator_information
 
-from .staking_structures import (
-    Directive
-)
+from .staking_structures import Directive
 
-from .staking_signing import (
-    sign_staking_transaction
-)
+from .staking_signing import sign_staking_transaction
 
-_default_endpoint = 'http://localhost:9500'
+_default_endpoint = "http://localhost:9500"
 _default_timeout = 30
 
 # TODO: Add unit testing
@@ -49,13 +32,13 @@ class Validator:
     website_char_limit = 140
     security_contact_char_limit = 140
     details_char_limit = 280
-    min_required_delegation = convert_one_to_atto(10000)        # in ATTO
+    min_required_delegation = convert_one_to_atto(10000)  # in ATTO
 
     def __init__(self, address):
         if not isinstance(address, str):
-            raise InvalidValidatorError(1, 'given ONE address was not a string')
+            raise InvalidValidatorError(1, "given ONE address was not a string")
         if not is_valid_address(address):
-            raise InvalidValidatorError(1, f'{address} is not valid ONE address')
+            raise InvalidValidatorError(1, f"{address} is not valid ONE address")
         self._address = address
         self._bls_keys = []
         self._bls_key_sigs = []
@@ -84,8 +67,11 @@ class Validator:
         """
         if check_str:
             if not isinstance(data, str):
-                raise InvalidValidatorError(3, f'Expected data to be string to avoid floating point precision issues but got {data}')
-        return '' if not data else str(data)
+                raise InvalidValidatorError(
+                    3,
+                    f"Expected data to be string to avoid floating point precision issues but got {data}",
+                )
+        return "" if not data else str(data)
 
     def __str__(self) -> str:
         """
@@ -98,7 +84,7 @@ class Validator:
         return json.dumps(info)
 
     def __repr__(self) -> str:
-        return f'<Validator: {hex(id(self))}>'
+        return f"<Validator: {hex(id(self))}>"
 
     def get_address(self) -> str:
         """
@@ -209,7 +195,9 @@ class Validator:
         """
         name = self._sanitize_input(name)
         if len(name) > self.name_char_limit:
-            raise InvalidValidatorError(3, f'Name must be less than {self.name_char_limit} characters')
+            raise InvalidValidatorError(
+                3, f"Name must be less than {self.name_char_limit} characters"
+            )
         self._name = name
 
     def get_name(self) -> str:
@@ -239,7 +227,9 @@ class Validator:
         """
         identity = self._sanitize_input(identity)
         if len(identity) > self.identity_char_limit:
-            raise InvalidValidatorError(3, f'Identity must be less than {self.identity_char_limit} characters')
+            raise InvalidValidatorError(
+                3, f"Identity must be less than {self.identity_char_limit} characters"
+            )
         self._identity = identity
 
     def get_identity(self) -> str:
@@ -269,7 +259,9 @@ class Validator:
         """
         website = self._sanitize_input(website)
         if len(website) > self.website_char_limit:
-            raise InvalidValidatorError(3, f'Website must be less than {self.website_char_limit} characters')
+            raise InvalidValidatorError(
+                3, f"Website must be less than {self.website_char_limit} characters"
+            )
         self._website = website
 
     def get_website(self) -> str:
@@ -299,7 +291,10 @@ class Validator:
         """
         contact = self._sanitize_input(contact)
         if len(contact) > self.security_contact_char_limit:
-            raise InvalidValidatorError(3, f'Security contact must be less than {self.security_contact_char_limit} characters')
+            raise InvalidValidatorError(
+                3,
+                f"Security contact must be less than {self.security_contact_char_limit} characters",
+            )
         self._security_contact = contact
 
     def get_security_contact(self) -> str:
@@ -329,7 +324,9 @@ class Validator:
         """
         details = self._sanitize_input(details)
         if len(details) > self.details_char_limit:
-            raise InvalidValidatorError(3, f'Details must be less than {self.details_char_limit} characters')
+            raise InvalidValidatorError(
+                3, f"Details must be less than {self.details_char_limit} characters"
+            )
         self._details = details
 
     def get_details(self) -> str:
@@ -361,9 +358,14 @@ class Validator:
         try:
             delegation = Decimal(delegation)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Min self delegation must be a number') from e
+            raise InvalidValidatorError(
+                3, "Min self delegation must be a number"
+            ) from e
         if delegation < self.min_required_delegation:
-            raise InvalidValidatorError(3, f'Min self delegation must be greater than {self.min_required_delegation} ATTO')
+            raise InvalidValidatorError(
+                3,
+                f"Min self delegation must be greater than {self.min_required_delegation} ATTO",
+            )
         self._min_self_delegation = delegation
 
     def get_min_self_delegation(self) -> Decimal:
@@ -395,13 +397,20 @@ class Validator:
         try:
             max_delegation = Decimal(max_delegation)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Max total delegation must be a number') from e
+            raise InvalidValidatorError(
+                3, "Max total delegation must be a number"
+            ) from e
         if self._min_self_delegation:
             if max_delegation < self._min_self_delegation:
-                raise InvalidValidatorError(3, f'Max total delegation must be greater than min self delegation: '
-                                               '{self._min_self_delegation}')
+                raise InvalidValidatorError(
+                    3,
+                    f"Max total delegation must be greater than min self delegation: "
+                    "{self._min_self_delegation}",
+                )
         else:
-            raise InvalidValidatorError(4, 'Min self delegation must be set before max total delegation')
+            raise InvalidValidatorError(
+                4, "Min self delegation must be set before max total delegation"
+            )
         self._max_total_delegation = max_delegation
 
     def get_max_total_delegation(self) -> Decimal:
@@ -433,19 +442,29 @@ class Validator:
         try:
             amount = Decimal(amount)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Amount must be a number') from e
+            raise InvalidValidatorError(3, "Amount must be a number") from e
         if self._min_self_delegation:
             if amount < self._min_self_delegation:
-                raise InvalidValidatorError(3, 'Amount must be greater than min self delegation: '
-                                               f'{self._min_self_delegation}')
+                raise InvalidValidatorError(
+                    3,
+                    "Amount must be greater than min self delegation: "
+                    f"{self._min_self_delegation}",
+                )
         else:
-            raise InvalidValidatorError(4, 'Min self delegation must be set before amount')
+            raise InvalidValidatorError(
+                4, "Min self delegation must be set before amount"
+            )
         if self._max_total_delegation:
             if amount > self._max_total_delegation:
-                raise InvalidValidatorError(3, 'Amount must be less than max total delegation: '
-                                               f'{self._max_total_delegation}')
+                raise InvalidValidatorError(
+                    3,
+                    "Amount must be less than max total delegation: "
+                    f"{self._max_total_delegation}",
+                )
         else:
-            raise InvalidValidatorError(4, 'Max total delegation must be set before amount')
+            raise InvalidValidatorError(
+                4, "Max total delegation must be set before amount"
+            )
         self._inital_delegation = amount
 
     def get_amount(self) -> Decimal:
@@ -477,9 +496,9 @@ class Validator:
         try:
             rate = Decimal(rate)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Max rate must be a number') from e
+            raise InvalidValidatorError(3, "Max rate must be a number") from e
         if rate < 0 or rate > 1:
-            raise InvalidValidatorError(3, 'Max rate must be between 0 and 1')
+            raise InvalidValidatorError(3, "Max rate must be between 0 and 1")
         self._max_rate = rate
 
     def get_max_rate(self) -> Decimal:
@@ -511,14 +530,21 @@ class Validator:
         try:
             rate = Decimal(rate)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Max change rate must be a number') from e
+            raise InvalidValidatorError(3, "Max change rate must be a number") from e
         if rate < 0:
-            raise InvalidValidatorError(3, 'Max change rate must be greater than or equal to 0')
+            raise InvalidValidatorError(
+                3, "Max change rate must be greater than or equal to 0"
+            )
         if self._max_rate:
             if rate > self._max_rate:
-                raise InvalidValidatorError(3, f'Max change rate must be less than or equal to max rate: {self._max_rate}')
+                raise InvalidValidatorError(
+                    3,
+                    f"Max change rate must be less than or equal to max rate: {self._max_rate}",
+                )
         else:
-            raise InvalidValidatorError(4, 'Max rate must be set before max change rate')
+            raise InvalidValidatorError(
+                4, "Max rate must be set before max change rate"
+            )
         self._max_change_rate = rate
 
     def get_max_change_rate(self) -> Decimal:
@@ -550,14 +576,16 @@ class Validator:
         try:
             rate = Decimal(rate)
         except (TypeError, InvalidOperation) as e:
-            raise InvalidValidatorError(3, 'Rate must be a number') from e
+            raise InvalidValidatorError(3, "Rate must be a number") from e
         if rate < 0:
-            raise InvalidValidatorError(3, 'Rate must be greater than or equal to 0')
+            raise InvalidValidatorError(3, "Rate must be greater than or equal to 0")
         if self._max_rate:
             if rate > self._max_rate:
-                raise InvalidValidatorError(3, f'Rate must be less than or equal to max rate: {self._max_rate}')
+                raise InvalidValidatorError(
+                    3, f"Rate must be less than or equal to max rate: {self._max_rate}"
+                )
         else:
-            raise InvalidValidatorError(4, 'Max rate must be set before rate')
+            raise InvalidValidatorError(4, "Max rate must be set before rate")
         self._rate = rate
 
     def get_rate(self) -> Decimal:
@@ -571,7 +599,9 @@ class Validator:
         """
         return self._rate
 
-    def does_validator_exist(self, endpoint=_default_endpoint, timeout=_default_timeout) -> bool:
+    def does_validator_exist(
+        self, endpoint=_default_endpoint, timeout=_default_timeout
+    ) -> bool:
         """
         Check if validator exists on blockchain
 
@@ -629,31 +659,33 @@ class Validator:
             If input value is invalid
         """
         try:
-            self.set_name(info['name'])
-            self.set_identity(info['identity'])
-            self.set_website(info['website'])
-            self.set_details(info['details'])
-            self.set_security_contact(info['security-contact'])
+            self.set_name(info["name"])
+            self.set_identity(info["identity"])
+            self.set_website(info["website"])
+            self.set_details(info["details"])
+            self.set_security_contact(info["security-contact"])
 
-            self.set_min_self_delegation(info['min-self-delegation'])
-            self.set_max_total_delegation(info['max-total-delegation'])
-            self.set_amount(info['amount'])
+            self.set_min_self_delegation(info["min-self-delegation"])
+            self.set_max_total_delegation(info["max-total-delegation"])
+            self.set_amount(info["amount"])
 
-            self.set_max_rate(info['max-rate'])
-            self.set_max_change_rate(info['max-change-rate'])
-            self.set_rate(info['rate'])
+            self.set_max_rate(info["max-rate"])
+            self.set_max_change_rate(info["max-change-rate"])
+            self.set_rate(info["rate"])
 
             self._bls_keys = []
-            for key in info['bls-public-keys']:
+            for key in info["bls-public-keys"]:
                 self.add_bls_key(key)
 
             self._bls_key_sigs = []
-            for key in info['bls-key-sigs']:
+            for key in info["bls-key-sigs"]:
                 self.add_bls_key_sig(key)
         except KeyError as e:
-            raise InvalidValidatorError(3, 'Info has missing key') from e
+            raise InvalidValidatorError(3, "Info has missing key") from e
 
-    def load_from_blockchain(self, endpoint=_default_endpoint, timeout=_default_timeout):
+    def load_from_blockchain(
+        self, endpoint=_default_endpoint, timeout=_default_timeout
+    ):
         """
         Import validator information from blockchain with given address
         At the moment, this is unable to fetch the BLS Signature, which is not implemented
@@ -673,33 +705,43 @@ class Validator:
         """
         try:
             if not self.does_validator_exist(endpoint, timeout):
-                raise InvalidValidatorError(5, f'Validator does not exist on chain according to {endpoint}')
+                raise InvalidValidatorError(
+                    5, f"Validator does not exist on chain according to {endpoint}"
+                )
         except (RPCError, RequestsError, RequestsTimeoutError) as e:
-            raise InvalidValidatorError(5, 'Error requesting validator information') from e
+            raise InvalidValidatorError(
+                5, "Error requesting validator information"
+            ) from e
         try:
             validator_info = get_validator_information(self._address, endpoint, timeout)
         except (RPCError, RequestsError, RequestsTimeoutError) as e:
-            raise InvalidValidatorError(5, 'Error requesting validator information') from e
+            raise InvalidValidatorError(
+                5, "Error requesting validator information"
+            ) from e
 
         # Skip additional sanity checks when importing from chain
         try:
-            info = validator_info['validator']
-            self._name = info['name']
-            self._identity = info['identity']
-            self._website = info['website']
-            self._details = info['details']
-            self._security_contact = info['security-contact']
-
-            self._min_self_delegation = info['min-self-delegation']
-            self._max_total_delegation = info['max-total-delegation']
-            self._inital_delegation = self._min_self_delegation  # Since validator exists, set initial delegation to 0
-
-            self._max_rate = Decimal(info['max-rate'])
-            self._max_change_rate = Decimal(info['max-change-rate'])
-            self._rate = Decimal(info['rate'])
-            self._bls_keys = info[ 'bls-public-keys' ]
+            info = validator_info["validator"]
+            self._name = info["name"]
+            self._identity = info["identity"]
+            self._website = info["website"]
+            self._details = info["details"]
+            self._security_contact = info["security-contact"]
+
+            self._min_self_delegation = info["min-self-delegation"]
+            self._max_total_delegation = info["max-total-delegation"]
+            self._inital_delegation = (
+                self._min_self_delegation
+            )  # Since validator exists, set initial delegation to 0
+
+            self._max_rate = Decimal(info["max-rate"])
+            self._max_change_rate = Decimal(info["max-change-rate"])
+            self._rate = Decimal(info["rate"])
+            self._bls_keys = info["bls-public-keys"]
         except KeyError as e:
-            raise InvalidValidatorError(5, 'Error importing validator information from RPC result') from e
+            raise InvalidValidatorError(
+                5, "Error importing validator information from RPC result"
+            ) from e
 
     def export(self) -> dict:
         """
@@ -724,11 +766,13 @@ class Validator:
             "max-rate": self._max_rate,
             "max-change-rate": self._max_change_rate,
             "bls-public-keys": self._bls_keys,
-            "bls-key-sigs": self._bls_key_sigs
+            "bls-key-sigs": self._bls_key_sigs,
         }
         return info
 
-    def sign_create_validator_transaction(self, nonce, gas_price, gas_limit, private_key, chain_id=None) -> SignedTransaction:
+    def sign_create_validator_transaction(
+        self, nonce, gas_price, gas_limit, private_key, chain_id=None
+    ) -> SignedTransaction:
         """
         Create but not post a transaction to Create the Validator using private_key
 
@@ -746,16 +790,27 @@ class Validator:
         https://github.com/harmony-one/sdk/blob/99a827782fabcd5f91f025af0d8de228956d42b4/packages/harmony-staking/src/stakingTransaction.ts#L413
         """
         info = self.export().copy()
-        info['directive'] = Directive.CreateValidator
-        info['validatorAddress'] = info.pop('validator-addr')   # change the key
-        info['nonce'] = nonce
-        info['gasPrice'] = gas_price
-        info['gasLimit'] = gas_limit
+        info["directive"] = Directive.CreateValidator
+        info["validatorAddress"] = info.pop("validator-addr")  # change the key
+        info["nonce"] = nonce
+        info["gasPrice"] = gas_price
+        info["gasLimit"] = gas_limit
         if chain_id:
-            info['chainId'] = chain_id
+            info["chainId"] = chain_id
         return sign_staking_transaction(info, private_key)
 
-    def sign_edit_validator_transaction(self, nonce, gas_price, gas_limit, rate, bls_key_to_remove, bls_key_to_add, bls_key_to_add_sig, private_key, chain_id=None) -> SignedTransaction:
+    def sign_edit_validator_transaction(
+        self,
+        nonce,
+        gas_price,
+        gas_limit,
+        rate,
+        bls_key_to_remove,
+        bls_key_to_add,
+        bls_key_to_add_sig,
+        private_key,
+        chain_id=None,
+    ) -> SignedTransaction:
         """
         Create but not post a transaction to Edit the Validator using private_key
 
@@ -776,18 +831,18 @@ class Validator:
         self.add_bls_key(bls_key_to_add)
         self.remove_bls_key(bls_key_to_remove)
         info = self.export().copy()
-        info['directive'] = Directive.EditValidator
-        info['validatorAddress'] = info.pop('validator-addr')   # change the key
-        info['nonce'] = nonce
-        info['gasPrice'] = gas_price
-        info['gasLimit'] = gas_limit
-        _ = info.pop('max-rate')            # not needed
-        _ = info.pop('max-change-rate')     # not needed
-        _ = info.pop('bls-public-keys')     # remove this list
-        _ = info.pop('amount')              # also unused
-        info['bls-key-to-remove'] = bls_key_to_remove
-        info['bls-key-to-add'] = bls_key_to_add
-        info['bls-key-to-add-sig'] = bls_key_to_add_sig
+        info["directive"] = Directive.EditValidator
+        info["validatorAddress"] = info.pop("validator-addr")  # change the key
+        info["nonce"] = nonce
+        info["gasPrice"] = gas_price
+        info["gasLimit"] = gas_limit
+        _ = info.pop("max-rate")  # not needed
+        _ = info.pop("max-change-rate")  # not needed
+        _ = info.pop("bls-public-keys")  # remove this list
+        _ = info.pop("amount")  # also unused
+        info["bls-key-to-remove"] = bls_key_to_remove
+        info["bls-key-to-add"] = bls_key_to_add
+        info["bls-key-to-add-sig"] = bls_key_to_add_sig
         if chain_id:
-            info['chainId'] = chain_id
+            info["chainId"] = chain_id
         return sign_staking_transaction(info, private_key)
diff --git a/tests/bech32-pyhmy/test_bech32.py b/tests/bech32-pyhmy/test_bech32.py
index 2d58938..e92202f 100644
--- a/tests/bech32-pyhmy/test_bech32.py
+++ b/tests/bech32-pyhmy/test_bech32.py
@@ -1,10 +1,9 @@
-from pyhmy.bech32 import (
-    bech32
-)
+from pyhmy.bech32 import bech32
+
 
 def test_encode():
-    bech32.encode('one', 5, [121, 161])
+    bech32.encode("one", 5, [121, 161])
 
-def test_decode():
-    bech32.decode('one', 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9')
 
+def test_decode():
+    bech32.decode("one", "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9")
diff --git a/tests/logging-pyhmy/test_logging.py b/tests/logging-pyhmy/test_logging.py
index 018a66e..f15796d 100644
--- a/tests/logging-pyhmy/test_logging.py
+++ b/tests/logging-pyhmy/test_logging.py
@@ -14,11 +14,11 @@ def test_basic_logger():
     logger.debug("test debug")
     logger.error("test error")
     logger.warning("test warning")
-    with open(f"{os.getcwd()}/logs/pytest.log", 'r') as f:
+    with open(f"{os.getcwd()}/logs/pytest.log", "r") as f:
         log_file_contents = f.readlines()
     assert not log_file_contents
     logger.write()
-    with open(f"{os.getcwd()}/logs/pytest.log", 'r') as f:
+    with open(f"{os.getcwd()}/logs/pytest.log", "r") as f:
         log_file_contents = f.readlines()
     for line in log_file_contents:
         if "INFO" in line:
diff --git a/tests/numbers-pyhmy/test_numbers.py b/tests/numbers-pyhmy/test_numbers.py
index 02fad81..b8d277a 100644
--- a/tests/numbers-pyhmy/test_numbers.py
+++ b/tests/numbers-pyhmy/test_numbers.py
@@ -1,8 +1,6 @@
 from decimal import Decimal
 
-from pyhmy import (
-    numbers
-)
+from pyhmy import numbers
 
 
 def test_convert_atto_to_one():
@@ -12,12 +10,13 @@ def test_convert_atto_to_one():
     b = numbers.convert_atto_to_one(1e18 + 0.6)
     assert Decimal(1) == b
 
-    c = numbers.convert_atto_to_one('1' + ('0' * 18))
+    c = numbers.convert_atto_to_one("1" + ("0" * 18))
     assert Decimal(1) == c
 
     d = numbers.convert_atto_to_one(Decimal(1e18))
     assert Decimal(1) == d
 
+
 def test_convert_one_to_atto():
     a = numbers.convert_one_to_atto(1e-18)
     assert Decimal(1) == a
@@ -25,7 +24,7 @@ def test_convert_one_to_atto():
     b = numbers.convert_one_to_atto(1.5)
     assert Decimal(1.5e18) == b
 
-    c = numbers.convert_one_to_atto('1')
+    c = numbers.convert_one_to_atto("1")
     assert Decimal(1e18) == c
 
     d = numbers.convert_one_to_atto(Decimal(1))
diff --git a/tests/request-pyhmy/test_request.py b/tests/request-pyhmy/test_request.py
index 19acdeb..4505069 100644
--- a/tests/request-pyhmy/test_request.py
+++ b/tests/request-pyhmy/test_request.py
@@ -4,31 +4,27 @@ import socket
 import pytest
 import requests
 
-from pyhmy.rpc import (
-    exceptions,
-    request
-)
+from pyhmy.rpc import exceptions, request
 
 
 @pytest.fixture(scope="session", autouse=True)
 def setup():
-    endpoint = 'http://localhost:9500'
+    endpoint = "http://localhost:9500"
     timeout = 30
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     params = []
-    payload = {
-        "id": "1",
-        "jsonrpc": "2.0",
-        "method": method,
-        "params": params
-    }
-    headers = {
-        'Content-Type': 'application/json'
-    }
+    payload = {"id": "1", "jsonrpc": "2.0", "method": method, "params": params}
+    headers = {"Content-Type": "application/json"}
 
     try:
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
     except Exception as e:
         pytest.skip("can not connect to local blockchain", allow_module_level=True)
 
@@ -36,16 +32,18 @@ def setup():
 def test_request_connection_error():
     # Find available port
     s = socket.socket()
-    s.bind(('localhost', 0))
+    s.bind(("localhost", 0))
     port = s.getsockname()[1]
     s.close()
 
     if port == 0:
         pytest.skip("could not find available port")
-    bad_endpoint = f'http://localhost:{port}'
+    bad_endpoint = f"http://localhost:{port}"
     bad_request = None
     try:
-        bad_request = request.rpc_request('hmyv2_getNodeMetadata', endpoint=bad_endpoint)
+        bad_request = request.rpc_request(
+            "hmyv2_getNodeMetadata", endpoint=bad_endpoint
+        )
     except Exception as e:
         assert isinstance(e, exceptions.RequestsError)
     assert bad_request is None
@@ -54,7 +52,7 @@ def test_request_connection_error():
 def test_request_rpc_error():
     error_request = None
     try:
-        error_request = request.rpc_request('hmyv2_getBalance')
+        error_request = request.rpc_request("hmyv2_getBalance")
     except (exceptions.RequestsTimeoutError, exceptions.RequestsError) as err:
         pytest.skip("can not connect to local blockchain", allow_module_level=True)
     except Exception as e:
@@ -63,24 +61,23 @@ def test_request_rpc_error():
 
 
 def test_rpc_request():
-    endpoint = 'http://localhost:9500'
+    endpoint = "http://localhost:9500"
     timeout = 30
-    method = 'hmyv2_getNodeMetadata'
+    method = "hmyv2_getNodeMetadata"
     params = []
-    payload = {
-        "id": "1",
-        "jsonrpc": "2.0",
-        "method": method,
-        "params": params
-    }
-    headers = {
-        'Content-Type': 'application/json'
-    }
+    payload = {"id": "1", "jsonrpc": "2.0", "method": method, "params": params}
+    headers = {"Content-Type": "application/json"}
 
     response = None
     try:
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
     except:
         pytest.skip("can not connect to local blockchain")
     assert response is not None
@@ -89,14 +86,14 @@ def test_rpc_request():
     try:
         resp = json.loads(response.content)
     except json.decoder.JSONDecodeError as err:
-        pytest.skip('unable to decode response')
+        pytest.skip("unable to decode response")
     assert resp is not None
 
     rpc_response = None
     try:
         rpc_response = request.rpc_request(method, params, endpoint, timeout)
     except exceptions.RPCError as e:
-        assert 'error' in resp
+        assert "error" in resp
 
     if rpc_response is not None:
         assert rpc_response == resp
diff --git a/tests/sdk-pyhmy/conftest.py b/tests/sdk-pyhmy/conftest.py
index 5767b6c..d9f3af3 100644
--- a/tests/sdk-pyhmy/conftest.py
+++ b/tests/sdk-pyhmy/conftest.py
@@ -9,11 +9,9 @@ import requests
 # 1f84c95ac16e6a50f08d44c7bde7aff8742212fda6e4321fde48bf83bef266dc / one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3 (genesis)
 # 3c86ac59f6b038f584be1c08fced78d7c71bb55d5655f81714f3cddc82144c65 / one1ru3p8ff0wsyl7ncsx3vwd5szuze64qz60upg37 (transferred 503)
 
-endpoint = 'http://localhost:9500'
+endpoint = "http://localhost:9500"
 timeout = 30
-headers = {
-    'Content-Type': 'application/json'
-}
+headers = {"Content-Type": "application/json"}
 txs = [
     # same shard 503 ONE transfer from one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3 to one1ru3p8ff0wsyl7ncsx3vwd5szuze64qz60upg37 (0 nonce)
     "0xf86f8085174876e8008252088080941f2213a52f7409ff4f103458e6d202e0b3aa805a891b4486fafde57c00008027a0d7c0b20207dcc9dde376822dc3f5625eac6f59a7526111695cdba3e29553ca17a05d4ca9a421ae16f89cbf6848186eaea7a800da732446dff9952e7c1e91d414e3",
@@ -37,8 +35,9 @@ stx_hashes = [
     "0x400e9831d358f5daccd153cad5bf53650a0d413bd8682ec0ffad55367d162968",
     "0xc8177ace2049d9f4eb4a45fd6bd6b16f693573d036322c36774cc00d05a3e24f",
 ]
-assert len( txs ) == len( tx_hashes ), "Mismatch in tx and tx_hash count"
-assert len( stxs ) == len( stx_hashes ), "Mismatch in stx and stx_hash count"
+assert len(txs) == len(tx_hashes), "Mismatch in tx and tx_hash count"
+assert len(stxs) == len(stx_hashes), "Mismatch in stx and stx_hash count"
+
 
 @pytest.fixture(scope="session", autouse=True)
 def setup_blockchain():
@@ -47,38 +46,61 @@ def setup_blockchain():
     metadata = _check_connection()
     _check_staking_epoch(metadata)
 
-    for i in range( len( txs ) ):
-        tx = txs[ i ]
-        tx_hash = tx_hashes[ i ]
-        _send_transaction( tx, endpoint )
-        if not _wait_for_transaction_confirmed( tx_hash, endpoint ):
-            pytest.skip("Could not confirm initial transaction #{} on chain".format( i ), allow_module_level = True)
-    
-    for i in range( len( stxs ) ):
-        stx = stxs[ i ]
-        stx_hash = stx_hashes[ i ]
-        _send_staking_transaction( stx, endpoint )
-        if not _wait_for_staking_transaction_confirmed( stx_hash, endpoint ):
-            pytest.skip("Could not confirm initial staking transaction #{} on chain".format( i ), allow_module_level = True)
+    for i in range(len(txs)):
+        tx = txs[i]
+        tx_hash = tx_hashes[i]
+        _send_transaction(tx, endpoint)
+        if not _wait_for_transaction_confirmed(tx_hash, endpoint):
+            pytest.skip(
+                "Could not confirm initial transaction #{} on chain".format(i),
+                allow_module_level=True,
+            )
+
+    for i in range(len(stxs)):
+        stx = stxs[i]
+        stx_hash = stx_hashes[i]
+        _send_staking_transaction(stx, endpoint)
+        if not _wait_for_staking_transaction_confirmed(stx_hash, endpoint):
+            pytest.skip(
+                "Could not confirm initial staking transaction #{} on chain".format(i),
+                allow_module_level=True,
+            )
+
 
 def _check_connection():
     try:
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_getNodeMetadata',
-            "params": []
+            "method": "hmyv2_getNodeMetadata",
+            "params": [],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         metadata = json.loads(response.content)
-        if 'error' in metadata:
-            pytest.skip(f"Error in hmyv2_getNodeMetadata reply: {metadata['error']}", allow_module_level=True)
-        if 'chain-config' not in metadata['result']:
-            pytest.skip("Chain config not found in hmyv2_getNodeMetadata reply", allow_module_level=True)
+        if "error" in metadata:
+            pytest.skip(
+                f"Error in hmyv2_getNodeMetadata reply: {metadata['error']}",
+                allow_module_level=True,
+            )
+        if "chain-config" not in metadata["result"]:
+            pytest.skip(
+                "Chain config not found in hmyv2_getNodeMetadata reply",
+                allow_module_level=True,
+            )
         return metadata
     except Exception as e:
-        pytest.skip('Can not connect to local blockchain or bad hmyv2_getNodeMetadata reply', allow_module_level=True)
+        pytest.skip(
+            "Can not connect to local blockchain or bad hmyv2_getNodeMetadata reply",
+            allow_module_level=True,
+        )
+
 
 def _check_staking_epoch(metadata):
     latest_header = None
@@ -86,105 +108,163 @@ def _check_staking_epoch(metadata):
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_latestHeader',
-            "params": []
+            "method": "hmyv2_latestHeader",
+            "params": [],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         latest_header = json.loads(response.content)
-        if 'error' in latest_header:
-            pytest.skip(f"Error in hmyv2_latestHeader reply: {latest_header['error']}", allow_module_level=True)
+        if "error" in latest_header:
+            pytest.skip(
+                f"Error in hmyv2_latestHeader reply: {latest_header['error']}",
+                allow_module_level=True,
+            )
     except Exception as e:
-        pytest.skip('Failed to get hmyv2_latestHeader reply', allow_module_level=True)
+        pytest.skip("Failed to get hmyv2_latestHeader reply", allow_module_level=True)
 
     if metadata and latest_header:
-        staking_epoch = metadata['result']['chain-config']['staking-epoch']
-        current_epoch = latest_header['result']['epoch']
+        staking_epoch = metadata["result"]["chain-config"]["staking-epoch"]
+        current_epoch = latest_header["result"]["epoch"]
         if staking_epoch > current_epoch:
-            pytest.skip(f'Not staking epoch: current {current_epoch}, staking {staking_epoch}', allow_module_level=True)
+            pytest.skip(
+                f"Not staking epoch: current {current_epoch}, staking {staking_epoch}",
+                allow_module_level=True,
+            )
+
 
 def _send_transaction(raw_tx, endpoint):
     try:
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_sendRawTransaction',
-            "params": [raw_tx]
+            "method": "hmyv2_sendRawTransaction",
+            "params": [raw_tx],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         tx = json.loads(response.content)
-        if 'error' in tx:
-            pytest.skip(f"Error in hmyv2_sendRawTransaction reply: {tx['error']}", allow_module_level=True)
+        if "error" in tx:
+            pytest.skip(
+                f"Error in hmyv2_sendRawTransaction reply: {tx['error']}",
+                allow_module_level=True,
+            )
     except Exception as e:
-        pytest.skip('Failed to get hmyv2_sendRawTransaction reply', allow_module_level=True)
+        pytest.skip(
+            "Failed to get hmyv2_sendRawTransaction reply", allow_module_level=True
+        )
+
 
 def _check_transaction(tx_hash, endpoint):
     try:
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_getTransactionByHash',
-            "params": [tx_hash]
+            "method": "hmyv2_getTransactionByHash",
+            "params": [tx_hash],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         tx_data = json.loads(response.content)
         return tx_data
     except Exception as e:
-        pytest.skip('Failed to get hmyv2_getTransactionByHash reply', allow_module_level=True)
+        pytest.skip(
+            "Failed to get hmyv2_getTransactionByHash reply", allow_module_level=True
+        )
+
 
-def _wait_for_transaction_confirmed(tx_hash, endpoint, timeout = 30):
+def _wait_for_transaction_confirmed(tx_hash, endpoint, timeout=30):
     start_time = time.time()
-    while((time.time() - start_time) <= timeout):
+    while (time.time() - start_time) <= timeout:
         tx_data = _check_transaction(tx_hash, endpoint)
         if tx_data is not None:
-            block_hash = tx_data[ "result" ].get( "blockHash", "0x00" )
-            unique_chars = "".join( set( list( block_hash[ 2 : ] ) ) )
+            block_hash = tx_data["result"].get("blockHash", "0x00")
+            unique_chars = "".join(set(list(block_hash[2:])))
             if unique_chars != "0":
                 return True
         time.sleep(random.uniform(0.2, 0.5))
     return False
 
-def _send_staking_transaction(raw_tx, endpoint = endpoint):
+
+def _send_staking_transaction(raw_tx, endpoint=endpoint):
     try:
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_sendRawStakingTransaction',
-            "params": [raw_tx]
+            "method": "hmyv2_sendRawStakingTransaction",
+            "params": [raw_tx],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         staking_tx = json.loads(response.content)
-        if 'error' in staking_tx:
-            pytest.skip(f"Error in hmyv2_sendRawStakingTransaction reply: {staking_tx['error']}", allow_module_level=True)
+        if "error" in staking_tx:
+            pytest.skip(
+                f"Error in hmyv2_sendRawStakingTransaction reply: {staking_tx['error']}",
+                allow_module_level=True,
+            )
     except Exception as e:
-        pytest.skip('Failed to get hmyv2_sendRawStakingTransaction reply', allow_module_level=True)
+        pytest.skip(
+            "Failed to get hmyv2_sendRawStakingTransaction reply",
+            allow_module_level=True,
+        )
 
-def _check_staking_transaction(stx_hash, endpoint = endpoint):
+
+def _check_staking_transaction(stx_hash, endpoint=endpoint):
     try:
         payload = {
             "id": "1",
             "jsonrpc": "2.0",
-            "method": 'hmyv2_getStakingTransactionByHash',
-            "params": [stx_hash]
+            "method": "hmyv2_getStakingTransactionByHash",
+            "params": [stx_hash],
         }
-        response = requests.request('POST', endpoint, headers=headers,
-                                    data=json.dumps(payload), timeout=timeout, allow_redirects=True)
+        response = requests.request(
+            "POST",
+            endpoint,
+            headers=headers,
+            data=json.dumps(payload),
+            timeout=timeout,
+            allow_redirects=True,
+        )
         stx_data = json.loads(response.content)
         return stx_data
     except Exception as e:
-        pytest.skip('Failed to get hmyv2_getStakingTransactionByHash reply', allow_module_level=True)
+        pytest.skip(
+            "Failed to get hmyv2_getStakingTransactionByHash reply",
+            allow_module_level=True,
+        )
+
 
-def _wait_for_staking_transaction_confirmed(tx_hash, endpoint, timeout = 30):
+def _wait_for_staking_transaction_confirmed(tx_hash, endpoint, timeout=30):
     answer = False
     start_time = time.time()
-    while((time.time() - start_time) <= timeout):
+    while (time.time() - start_time) <= timeout:
         tx_data = _check_staking_transaction(tx_hash, endpoint)
         if tx_data is not None:
-            block_hash = tx_data[ "result" ].get( "blockHash", "0x00" )
-            unique_chars = "".join( set( list( block_hash[ 2 : ] ) ) )
+            block_hash = tx_data["result"].get("blockHash", "0x00")
+            unique_chars = "".join(set(list(block_hash[2:])))
             if unique_chars != "0":
                 answer = True
         time.sleep(random.uniform(0.2, 0.5))
diff --git a/tests/sdk-pyhmy/test_account.py b/tests/sdk-pyhmy/test_account.py
index 1c1aa4a..b6f0ed5 100644
--- a/tests/sdk-pyhmy/test_account.py
+++ b/tests/sdk-pyhmy/test_account.py
@@ -1,33 +1,32 @@
 import pytest
 import requests
 
-from pyhmy import (
-    account
-)
+from pyhmy import account
 
-from pyhmy.rpc import (
-    exceptions
-)
+from pyhmy.rpc import exceptions
 
 
-explorer_endpoint = 'http://localhost:9700'
-endpoint_shard_one = 'http://localhost:9502'
-local_test_address = 'one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3'
+explorer_endpoint = "http://localhost:9700"
+endpoint_shard_one = "http://localhost:9502"
+local_test_address = "one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3"
 test_validator_address = local_test_address
 genesis_block_number = 0
 test_block_number = 1
-fake_shard = 'http://example.com'
+fake_shard = "http://example.com"
+
 
 def _test_account_rpc(fn, *args, **kwargs):
     if not callable(fn):
-        pytest.fail(f'Invalid function: {fn}')
+        pytest.fail(f"Invalid function: {fn}")
 
     try:
         response = fn(*args, **kwargs)
     except Exception as e:
-        if isinstance(e, exceptions.RPCError) and 'does not exist/is not available' in str(e):
-            pytest.skip(f'{str(e)}')
-        pytest.fail(f'Unexpected error: {e.__class__} {e}')
+        if isinstance(
+            e, exceptions.RPCError
+        ) and "does not exist/is not available" in str(e):
+            pytest.skip(f"{str(e)}")
+        pytest.fail(f"Unexpected error: {e.__class__} {e}")
     return response
 
 
@@ -36,69 +35,102 @@ def test_get_balance(setup_blockchain):
     assert isinstance(balance, int)
     assert balance > 0
 
+
 def test_get_balance_by_block(setup_blockchain):
-    balance = _test_account_rpc(account.get_balance_by_block, local_test_address, genesis_block_number)
+    balance = _test_account_rpc(
+        account.get_balance_by_block, local_test_address, genesis_block_number
+    )
     assert isinstance(balance, int)
     assert balance > 0
 
+
 def test_get_account_nonce(setup_blockchain):
-    true_nonce = _test_account_rpc(account.get_account_nonce, local_test_address, test_block_number, endpoint=endpoint_shard_one)
+    true_nonce = _test_account_rpc(
+        account.get_account_nonce,
+        local_test_address,
+        test_block_number,
+        endpoint=endpoint_shard_one,
+    )
     assert isinstance(true_nonce, int)
 
+
 def test_get_transaction_history(setup_blockchain):
-    tx_history = _test_account_rpc(account.get_transaction_history, local_test_address, endpoint=explorer_endpoint)
+    tx_history = _test_account_rpc(
+        account.get_transaction_history, local_test_address, endpoint=explorer_endpoint
+    )
     assert isinstance(tx_history, list)
     assert len(tx_history) >= 0
 
+
 def test_get_staking_transaction_history(setup_blockchain):
-    staking_tx_history = _test_account_rpc(account.get_staking_transaction_history, test_validator_address, endpoint=explorer_endpoint)
+    staking_tx_history = _test_account_rpc(
+        account.get_staking_transaction_history,
+        test_validator_address,
+        endpoint=explorer_endpoint,
+    )
     assert isinstance(staking_tx_history, list)
     assert len(staking_tx_history) > 0
 
+
 def test_get_balance_on_all_shards(setup_blockchain):
     balances = _test_account_rpc(account.get_balance_on_all_shards, local_test_address)
     assert isinstance(balances, list)
     assert len(balances) == 2
 
+
 def test_get_total_balance(setup_blockchain):
     total_balance = _test_account_rpc(account.get_total_balance, local_test_address)
     assert isinstance(total_balance, int)
     assert total_balance > 0
 
+
 def test_is_valid_address():
-    assert account.is_valid_address('one1zksj3evekayy90xt4psrz8h6j2v3hla4qwz4ur')
-    assert not account.is_valid_address('one1wje75aedczmj4dwjs0812xcg7vx0dy231cajk0')
+    assert account.is_valid_address("one1zksj3evekayy90xt4psrz8h6j2v3hla4qwz4ur")
+    assert not account.is_valid_address("one1wje75aedczmj4dwjs0812xcg7vx0dy231cajk0")
+
 
 def test_get_transaction_count(setup_blockchain):
-    tx_count = _test_account_rpc(account.get_transaction_count, local_test_address, 'latest', explorer_endpoint)
+    tx_count = _test_account_rpc(
+        account.get_transaction_count, local_test_address, "latest", explorer_endpoint
+    )
     assert isinstance(tx_count, int)
     assert tx_count > 0
 
+
 def test_get_transactions_count(setup_blockchain):
-    tx_count = _test_account_rpc(account.get_transactions_count, local_test_address, 'ALL', explorer_endpoint)
+    tx_count = _test_account_rpc(
+        account.get_transactions_count, local_test_address, "ALL", explorer_endpoint
+    )
+
 
 def test_get_staking_transactions_count(setup_blockchain):
-    tx_count = _test_account_rpc(account.get_staking_transactions_count, local_test_address, 'ALL', explorer_endpoint)
+    tx_count = _test_account_rpc(
+        account.get_staking_transactions_count,
+        local_test_address,
+        "ALL",
+        explorer_endpoint,
+    )
     assert isinstance(tx_count, int)
 
+
 def test_errors():
     with pytest.raises(exceptions.RPCError):
-        account.get_balance('', fake_shard)
+        account.get_balance("", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_balance_by_block('', 1, fake_shard)
+        account.get_balance_by_block("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_account_nonce('', 1, fake_shard)
+        account.get_account_nonce("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_transaction_count('', 1, fake_shard)
+        account.get_transaction_count("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_transactions_count('', 1, fake_shard)
+        account.get_transactions_count("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_transactions_count('', 'ALL', fake_shard)
+        account.get_transactions_count("", "ALL", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_transaction_history('', endpoint=fake_shard)
+        account.get_transaction_history("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_staking_transaction_history('', endpoint=fake_shard)
+        account.get_staking_transaction_history("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_balance_on_all_shards('', endpoint=fake_shard)
+        account.get_balance_on_all_shards("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        account.get_total_balance('', endpoint=fake_shard)
+        account.get_total_balance("", endpoint=fake_shard)
diff --git a/tests/sdk-pyhmy/test_blockchain.py b/tests/sdk-pyhmy/test_blockchain.py
index 4d5efc8..327a97e 100644
--- a/tests/sdk-pyhmy/test_blockchain.py
+++ b/tests/sdk-pyhmy/test_blockchain.py
@@ -1,211 +1,264 @@
 import pytest
 import requests
 
-from pyhmy import (
-    blockchain
-)
+from pyhmy import blockchain
 
-from pyhmy.rpc import (
-    exceptions
-)
+from pyhmy.rpc import exceptions
 
 
 test_epoch_number = 0
 genesis_block_number = 0
 test_block_number = 1
 test_block_hash = None
-fake_shard = 'http://example.com'
-address = 'one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3'
+fake_shard = "http://example.com"
+address = "one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3"
+
 
 def _test_blockchain_rpc(fn, *args, **kwargs):
     if not callable(fn):
-        pytest.fail(f'Invalid function: {fn}')
+        pytest.fail(f"Invalid function: {fn}")
 
     try:
         response = fn(*args, **kwargs)
     except Exception as e:
-        if isinstance(e, exceptions.RPCError) and 'does not exist/is not available' in str(e):
-            pytest.skip(f'{str(e)}')
-        pytest.fail(f'Unexpected error: {e.__class__} {e}')
+        if isinstance(
+            e, exceptions.RPCError
+        ) and "does not exist/is not available" in str(e):
+            pytest.skip(f"{str(e)}")
+        pytest.fail(f"Unexpected error: {e.__class__} {e}")
     return response
 
+
 def test_get_node_metadata(setup_blockchain):
     metadata = _test_blockchain_rpc(blockchain.get_node_metadata)
     assert isinstance(metadata, dict)
 
+
 def test_get_sharding_structure(setup_blockchain):
     sharding_structure = _test_blockchain_rpc(blockchain.get_sharding_structure)
     assert isinstance(sharding_structure, list)
     assert len(sharding_structure) > 0
 
+
 def test_get_leader_address(setup_blockchain):
     leader = _test_blockchain_rpc(blockchain.get_leader_address)
     assert isinstance(leader, str)
-    assert 'one1' in leader
+    assert "one1" in leader
+
 
 def test_get_block_number(setup_blockchain):
     current_block_number = _test_blockchain_rpc(blockchain.get_block_number)
     assert isinstance(current_block_number, int)
 
+
 def test_get_current_epoch(setup_blockchain):
     current_epoch = _test_blockchain_rpc(blockchain.get_current_epoch)
     assert isinstance(current_epoch, int)
 
+
 def tset_get_gas_price(setup_blockchain):
     gas = _test_blockchain_rpc(blockchain.get_gas_price)
     assert isinstance(gas, int)
 
+
 def test_get_num_peers(setup_blockchain):
     peers = _test_blockchain_rpc(blockchain.get_num_peers)
     assert isinstance(peers, int)
 
+
 def test_get_latest_header(setup_blockchain):
     header = _test_blockchain_rpc(blockchain.get_latest_header)
     assert isinstance(header, dict)
 
+
 def test_get_latest_chain_headers(setup_blockchain):
     header_pair = _test_blockchain_rpc(blockchain.get_latest_chain_headers)
     assert isinstance(header_pair, dict)
 
+
 def test_get_block_by_number(setup_blockchain):
     global test_block_hash
     block = _test_blockchain_rpc(blockchain.get_block_by_number, test_block_number)
     assert isinstance(block, dict)
-    assert 'hash' in block.keys()
-    test_block_hash = block['hash']
+    assert "hash" in block.keys()
+    test_block_hash = block["hash"]
+
 
 def test_get_block_by_hash(setup_blockchain):
     if not test_block_hash:
-        pytest.skip('Failed to get reference block hash')
+        pytest.skip("Failed to get reference block hash")
     block = _test_blockchain_rpc(blockchain.get_block_by_hash, test_block_hash)
     assert isinstance(block, dict)
 
+
 def test_get_block_transaction_count_by_number(setup_blockchain):
-    tx_count = _test_blockchain_rpc(blockchain.get_block_transaction_count_by_number, test_block_number)
+    tx_count = _test_blockchain_rpc(
+        blockchain.get_block_transaction_count_by_number, test_block_number
+    )
     assert isinstance(tx_count, int)
 
+
 def test_get_block_transaction_count_by_hash(setup_blockchain):
     if not test_block_hash:
-        pytest.skip('Failed to get reference block hash')
-    tx_count = _test_blockchain_rpc(blockchain.get_block_transaction_count_by_hash, test_block_hash)
+        pytest.skip("Failed to get reference block hash")
+    tx_count = _test_blockchain_rpc(
+        blockchain.get_block_transaction_count_by_hash, test_block_hash
+    )
     assert isinstance(tx_count, int)
 
+
 def test_get_blocks(setup_blockchain):
-    blocks = _test_blockchain_rpc(blockchain.get_blocks, genesis_block_number, test_block_number)
+    blocks = _test_blockchain_rpc(
+        blockchain.get_blocks, genesis_block_number, test_block_number
+    )
     assert isinstance(blocks, list)
     assert len(blocks) == (test_block_number - genesis_block_number + 1)
 
+
 def test_get_block_signers(setup_blockchain):
-    block_signers = _test_blockchain_rpc(blockchain.get_block_signers, test_block_number)
+    block_signers = _test_blockchain_rpc(
+        blockchain.get_block_signers, test_block_number
+    )
     assert isinstance(block_signers, list)
     assert len(block_signers) > 0
 
+
 def test_get_validators(setup_blockchain):
     validators = _test_blockchain_rpc(blockchain.get_validators, test_epoch_number)
     assert isinstance(validators, dict)
-    assert 'validators' in validators.keys()
-    assert len(validators['validators']) > 0
+    assert "validators" in validators.keys()
+    assert len(validators["validators"]) > 0
+
 
 def test_get_shard(setup_blockchain):
     shard = _test_blockchain_rpc(blockchain.get_shard)
     assert isinstance(shard, int)
     assert shard == 0
 
+
 def test_get_staking_epoch(setup_blockchain):
     staking_epoch = _test_blockchain_rpc(blockchain.get_staking_epoch)
     assert isinstance(staking_epoch, int)
 
+
 def test_get_prestaking_epoch(setup_blockchain):
     prestaking_epoch = _test_blockchain_rpc(blockchain.get_prestaking_epoch)
     assert isinstance(prestaking_epoch, int)
 
+
 def test_get_bad_blocks(setup_blockchain):
     # TODO: Remove skip when RPC is fixed
     pytest.skip("Known error with hmyv2_getCurrentBadBlocks")
     bad_blocks = _test_blockchain_rpc(blockchain.get_bad_blocks)
     assert isinstance(bad_blocks, list)
 
+
 def test_get_validator_keys(setup_blockchain):
     keys = _test_blockchain_rpc(blockchain.get_validator_keys, test_epoch_number)
     assert isinstance(keys, list)
     assert len(keys) > 0
 
+
 def test_get_block_signers_keys(setup_blockchain):
     keys = _test_blockchain_rpc(blockchain.get_block_signers_keys, test_block_number)
     assert isinstance(keys, list)
     assert len(keys) > 0
 
+
 def test_chain_id(setup_blockchain):
     chain_id = _test_blockchain_rpc(blockchain.chain_id)
     assert isinstance(chain_id, int)
 
+
 def test_get_peer_info(setup_blockchain):
     peer_info = _test_blockchain_rpc(blockchain.get_peer_info)
     assert isinstance(peer_info, dict)
 
+
 def test_protocol_version(setup_blockchain):
     protocol_version = _test_blockchain_rpc(blockchain.protocol_version)
     assert isinstance(protocol_version, int)
 
+
 def test_is_last_block(setup_blockchain):
     is_last_block = _test_blockchain_rpc(blockchain.is_last_block, 0)
     assert isinstance(is_last_block, bool)
     assert not is_last_block
 
+
 def test_epoch_last_block(setup_blockchain):
     epoch_last_block = _test_blockchain_rpc(blockchain.epoch_last_block, 0)
     assert isinstance(epoch_last_block, int)
 
+
 def test_get_circulating_supply(setup_blockchain):
     circulating_supply = _test_blockchain_rpc(blockchain.get_circulating_supply)
     assert isinstance(circulating_supply, str)
 
+
 def test_get_total_supply(setup_blockchain):
     total_supply = _test_blockchain_rpc(blockchain.get_total_supply)
     assert isinstance(total_supply, str) or total_supply == None
 
+
 def test_get_last_cross_links(setup_blockchain):
     last_cross_links = _test_blockchain_rpc(blockchain.get_last_cross_links)
     assert isinstance(last_cross_links, list)
 
+
 def test_get_gas_price(setup_blockchain):
     gas_price = _test_blockchain_rpc(blockchain.get_gas_price)
     assert isinstance(gas_price, int)
 
+
 def test_get_version(setup_blockchain):
     version = _test_blockchain_rpc(blockchain.get_version)
     assert isinstance(version, int)
 
+
 def test_get_header_by_number(setup_blockchain):
     header_pair = _test_blockchain_rpc(blockchain.get_header_by_number, 0)
     assert isinstance(header_pair, dict)
 
+
 def test_get_block_staking_transaction_count_by_number(setup_blockchain):
-    tx_count = _test_blockchain_rpc(blockchain.get_block_staking_transaction_count_by_number, test_block_number)
+    tx_count = _test_blockchain_rpc(
+        blockchain.get_block_staking_transaction_count_by_number, test_block_number
+    )
     assert isinstance(tx_count, int)
 
+
 def test_get_block_staking_transaction_count_by_hash(setup_blockchain):
     if not test_block_hash:
-        pytest.skip('Failed to get reference block hash')
-    tx_count = _test_blockchain_rpc(blockchain.get_block_staking_transaction_count_by_hash, test_block_hash)
+        pytest.skip("Failed to get reference block hash")
+    tx_count = _test_blockchain_rpc(
+        blockchain.get_block_staking_transaction_count_by_hash, test_block_hash
+    )
     assert isinstance(tx_count, int)
 
+
 def test_is_block_signer(setup_blockchain):
-    is_signer = _test_blockchain_rpc(blockchain.is_block_signer, test_block_number, address)
+    is_signer = _test_blockchain_rpc(
+        blockchain.is_block_signer, test_block_number, address
+    )
     assert isinstance(is_signer, bool)
 
+
 def test_get_signed_blocks(setup_blockchain):
     signed_blocks = _test_blockchain_rpc(blockchain.get_signed_blocks, address)
     assert isinstance(signed_blocks, int)
 
+
 def test_in_sync(setup_blockchain):
     in_sync = _test_blockchain_rpc(blockchain.in_sync)
     assert isinstance(in_sync, bool)
 
+
 def test_beacon_in_sync(setup_blockchain):
     beacon_in_sync = _test_blockchain_rpc(blockchain.beacon_in_sync)
     assert isinstance(beacon_in_sync, bool)
 
+
 def test_errors():
     with pytest.raises(exceptions.RPCError):
         blockchain.chain_id(fake_shard)
@@ -254,15 +307,15 @@ def test_errors():
     with pytest.raises(exceptions.RPCError):
         blockchain.get_block_by_number(0, endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        blockchain.get_block_by_hash('', endpoint=fake_shard)
+        blockchain.get_block_by_hash("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
         blockchain.get_block_transaction_count_by_number(0, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        blockchain.get_block_transaction_count_by_hash('', fake_shard)
+        blockchain.get_block_transaction_count_by_hash("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         blockchain.get_block_staking_transaction_count_by_number(0, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        blockchain.get_block_staking_transaction_count_by_hash('', fake_shard)
+        blockchain.get_block_staking_transaction_count_by_hash("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         blockchain.get_blocks(0, 1, endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
@@ -270,9 +323,9 @@ def test_errors():
     with pytest.raises(exceptions.RPCError):
         blockchain.get_block_signers_keys(0, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        blockchain.is_block_signer(0, '', fake_shard)
+        blockchain.is_block_signer(0, "", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        blockchain.get_signed_blocks('', fake_shard)
+        blockchain.get_signed_blocks("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         blockchain.get_validators(1, fake_shard)
     with pytest.raises(exceptions.RPCError):
diff --git a/tests/sdk-pyhmy/test_contract.py b/tests/sdk-pyhmy/test_contract.py
index 59dacc4..3739c5f 100644
--- a/tests/sdk-pyhmy/test_contract.py
+++ b/tests/sdk-pyhmy/test_contract.py
@@ -1,71 +1,80 @@
 import pytest
 
-from pyhmy import (
-    contract
-)
+from pyhmy import contract
 
-from pyhmy.rpc import (
-    exceptions
-)
+from pyhmy.rpc import exceptions
 
-explorer_endpoint = 'http://localhost:9599'
-contract_tx_hash = '0xa605852dd2fa39ed42e101c17aaca9d344d352ba9b24b14b9af94ec9cb58b31f'
+explorer_endpoint = "http://localhost:9599"
+contract_tx_hash = "0xa605852dd2fa39ed42e101c17aaca9d344d352ba9b24b14b9af94ec9cb58b31f"
 # deployedBytecode from json file
-contract_code = '0x6080604052348015600f57600080fd5b506004361060285760003560e01c80634936cd3614602d575b600080fd5b604080516001815290519081900360200190f3fea2646970667358221220fa3fa0e8d0267831a59f4dd5edf39a513d07e98461cb06660ad28d4beda744cd64736f6c634300080f0033'
+contract_code = "0x6080604052348015600f57600080fd5b506004361060285760003560e01c80634936cd3614602d575b600080fd5b604080516001815290519081900360200190f3fea2646970667358221220fa3fa0e8d0267831a59f4dd5edf39a513d07e98461cb06660ad28d4beda744cd64736f6c634300080f0033"
 contract_address = None
-fake_shard = 'http://example.com'
+fake_shard = "http://example.com"
+
 
 def _test_contract_rpc(fn, *args, **kwargs):
     if not callable(fn):
-        pytest.fail(f'Invalid function: {fn}')
+        pytest.fail(f"Invalid function: {fn}")
 
     try:
         response = fn(*args, **kwargs)
     except Exception as e:
-        if isinstance(e, exceptions.RPCError) and 'does not exist/is not available' in str(e):
-            pytest.skip(f'{str(e)}')
-        elif isinstance(e, exceptions.RPCError) and 'estimateGas returned' in str(e):
-            pytest.skip(f'{str(e)}')
-        pytest.fail(f'Unexpected error: {e.__class__} {e}')
+        if isinstance(
+            e, exceptions.RPCError
+        ) and "does not exist/is not available" in str(e):
+            pytest.skip(f"{str(e)}")
+        elif isinstance(e, exceptions.RPCError) and "estimateGas returned" in str(e):
+            pytest.skip(f"{str(e)}")
+        pytest.fail(f"Unexpected error: {e.__class__} {e}")
     return response
 
+
 def test_get_contract_address_from_hash(setup_blockchain):
     global contract_address
-    contract_address = _test_contract_rpc(contract.get_contract_address_from_hash, contract_tx_hash)
+    contract_address = _test_contract_rpc(
+        contract.get_contract_address_from_hash, contract_tx_hash
+    )
     assert isinstance(contract_address, str)
 
+
 def test_call(setup_blockchain):
     if not contract_address:
-        pytest.skip('Contract address not loaded yet')
-    called = _test_contract_rpc(contract.call, contract_address, 'latest')
-    assert isinstance(called, str) and called.startswith('0x')
+        pytest.skip("Contract address not loaded yet")
+    called = _test_contract_rpc(contract.call, contract_address, "latest")
+    assert isinstance(called, str) and called.startswith("0x")
+
 
 def test_estimate_gas(setup_blockchain):
     if not contract_address:
-        pytest.skip('Contract address not loaded yet')
+        pytest.skip("Contract address not loaded yet")
     gas = _test_contract_rpc(contract.estimate_gas, contract_address)
     assert isinstance(gas, int)
 
+
 def test_get_code(setup_blockchain):
     if not contract_address:
-        pytest.skip('Contract address not loaded yet')
-    code = _test_contract_rpc(contract.get_code, contract_address, 'latest')
+        pytest.skip("Contract address not loaded yet")
+    code = _test_contract_rpc(contract.get_code, contract_address, "latest")
     assert code == contract_code
 
+
 def test_get_storage_at(setup_blockchain):
     if not contract_address:
-        pytest.skip('Contract address not loaded yet')
-    storage = _test_contract_rpc(contract.get_storage_at, contract_address, '0x0', 'latest')
-    assert isinstance(storage, str) and storage.startswith('0x')
+        pytest.skip("Contract address not loaded yet")
+    storage = _test_contract_rpc(
+        contract.get_storage_at, contract_address, "0x0", "latest"
+    )
+    assert isinstance(storage, str) and storage.startswith("0x")
+
 
 def test_errors():
     with pytest.raises(exceptions.RPCError):
-        contract.get_contract_address_from_hash('', fake_shard)
+        contract.get_contract_address_from_hash("", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        contract.call('', '', endpoint=fake_shard)
+        contract.call("", "", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        contract.estimate_gas('', endpoint=fake_shard)
+        contract.estimate_gas("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        contract.get_code('', 'latest', endpoint=fake_shard)
+        contract.get_code("", "latest", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        contract.get_storage_at('', 1, 'latest', endpoint=fake_shard)
+        contract.get_storage_at("", 1, "latest", endpoint=fake_shard)
diff --git a/tests/sdk-pyhmy/test_signing.py b/tests/sdk-pyhmy/test_signing.py
index 34ac601..7709e20 100644
--- a/tests/sdk-pyhmy/test_signing.py
+++ b/tests/sdk-pyhmy/test_signing.py
@@ -1,6 +1,4 @@
-from pyhmy import (
-    signing
-)
+from pyhmy import signing
 
 """
 Test signature source (node.js)
@@ -30,16 +28,25 @@ let signed = RLPSign(transaction, privateKey);
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_eth_transaction():
     transaction_dict = {
-        'nonce': 2,
-        'gasPrice': 1,
-        'gas': 100,             # signing.py uses Ether, which by default calls it gas
-        'to': '0x14791697260e4c9a71f18484c9f997b308e59325',
-        'value': 5,
+        "nonce": 2,
+        "gasPrice": 1,
+        "gas": 100,  # signing.py uses Ether, which by default calls it gas
+        "to": "0x14791697260e4c9a71f18484c9f997b308e59325",
+        "value": 5,
     }
-    signed_tx = signing.sign_transaction(transaction_dict, '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48')
-    assert signed_tx.rawTransaction.hex() == '0xf85d0201649414791697260e4c9a71f18484c9f997b308e5932505801ca0b364f4296bfd3231889d1b9ac94c68abbcb8ee6a6c7a5fa412ac82b5b7b0d5d1a02233864842ab28ee4f99c207940a867b0f8534ca362836190792816b48dde3b1'
+    signed_tx = signing.sign_transaction(
+        transaction_dict,
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+    )
+    assert (
+        signed_tx.rawTransaction.hex()
+        == "0xf85d0201649414791697260e4c9a71f18484c9f997b308e5932505801ca0b364f4296bfd3231889d1b9ac94c68abbcb8ee6a6c7a5fa412ac82b5b7b0d5d1a02233864842ab28ee4f99c207940a867b0f8534ca362836190792816b48dde3b1"
+    )
+
 
 """
 Test signature source (node.js)
@@ -71,16 +78,24 @@ let signed = RLPSign(transaction, privateKey);
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_hmy_transaction():
     transaction_dict = {
-        'nonce': 2,
-        'gasPrice': 1,
-        'gas': 100,             # signing.py uses Ether, which by default calls it gas
-        'to': '0x14791697260e4c9a71f18484c9f997b308e59325',
-        'value': 5,
-        'shardID': 0,
-        'toShardID': 1,
-        'chainId': 'HmyMainnet'
+        "nonce": 2,
+        "gasPrice": 1,
+        "gas": 100,  # signing.py uses Ether, which by default calls it gas
+        "to": "0x14791697260e4c9a71f18484c9f997b308e59325",
+        "value": 5,
+        "shardID": 0,
+        "toShardID": 1,
+        "chainId": "HmyMainnet",
     }
-    signed_tx = signing.sign_transaction(transaction_dict, '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48')
-    assert signed_tx.rawTransaction.hex() == '0xf85f02016480019414791697260e4c9a71f18484c9f997b308e59325058026a02a203357ca6d7cdec981ad3d3692ad2c9e24536a9b6e7b486ce2f94f28c7563ea010d38cd0312a153af0aa7d8cd986040c36118bba373cb94e3e86fd4aedce904d'
+    signed_tx = signing.sign_transaction(
+        transaction_dict,
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+    )
+    assert (
+        signed_tx.rawTransaction.hex()
+        == "0xf85f02016480019414791697260e4c9a71f18484c9f997b308e59325058026a02a203357ca6d7cdec981ad3d3692ad2c9e24536a9b6e7b486ce2f94f28c7563ea010d38cd0312a153af0aa7d8cd986040c36118bba373cb94e3e86fd4aedce904d"
+    )
diff --git a/tests/sdk-pyhmy/test_staking.py b/tests/sdk-pyhmy/test_staking.py
index f84375a..7fc0ed0 100644
--- a/tests/sdk-pyhmy/test_staking.py
+++ b/tests/sdk-pyhmy/test_staking.py
@@ -1,135 +1,191 @@
 import pytest
 import requests
 
-from pyhmy import (
-    staking
-)
+from pyhmy import staking
 
-from pyhmy.rpc import (
-    exceptions
-)
+from pyhmy.rpc import exceptions
 
 
-explorer_endpoint = 'http://localhost:9700'
-test_validator_address = 'one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3'
-fake_shard = 'http://example.com'
+explorer_endpoint = "http://localhost:9700"
+test_validator_address = "one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3"
+fake_shard = "http://example.com"
+
 
 def _test_staking_rpc(fn, *args, **kwargs):
     if not callable(fn):
-        pytest.fail(f'Invalid function: {fn}')
+        pytest.fail(f"Invalid function: {fn}")
 
     try:
         response = fn(*args, **kwargs)
     except Exception as e:
-        if isinstance(e, exceptions.RPCError) and 'does not exist/is not available' in str(e):
-            pytest.skip(f'{str(e)}')
-        pytest.fail(f'Unexpected error: {e.__class__} {e}')
+        if isinstance(
+            e, exceptions.RPCError
+        ) and "does not exist/is not available" in str(e):
+            pytest.skip(f"{str(e)}")
+        pytest.fail(f"Unexpected error: {e.__class__} {e}")
     return response
 
+
 def test_get_all_validator_addresses(setup_blockchain):
     validator_addresses = _test_staking_rpc(staking.get_all_validator_addresses)
     assert isinstance(validator_addresses, list)
     assert len(validator_addresses) > 0
     assert test_validator_address in validator_addresses
 
+
 def test_get_validator_information(setup_blockchain):
     info = _test_staking_rpc(staking.get_validator_information, test_validator_address)
     assert isinstance(info, dict)
 
+
 def test_get_all_validator_information(setup_blockchain):
     all_validator_information = _test_staking_rpc(staking.get_all_validator_information)
     assert isinstance(all_validator_information, list)
     assert len(all_validator_information) > 0
 
+
 def test_get_delegations_by_delegator(setup_blockchain):
-    delegations = _test_staking_rpc(staking.get_delegations_by_delegator, test_validator_address)
+    delegations = _test_staking_rpc(
+        staking.get_delegations_by_delegator, test_validator_address
+    )
     assert isinstance(delegations, list)
     assert len(delegations) > 0
 
+
 def test_get_delegations_by_validator(setup_blockchain):
-    delegations = _test_staking_rpc(staking.get_delegations_by_validator, test_validator_address)
+    delegations = _test_staking_rpc(
+        staking.get_delegations_by_validator, test_validator_address
+    )
     assert isinstance(delegations, list)
     assert len(delegations) > 0
 
+
 def test_get_current_utility_metrics(setup_blockchain):
     metrics = _test_staking_rpc(staking.get_current_utility_metrics)
     assert isinstance(metrics, dict)
 
+
 def test_get_staking_network_info(setup_blockchain):
     info = _test_staking_rpc(staking.get_staking_network_info)
     assert isinstance(info, dict)
 
+
 def test_get_super_committees(setup_blockchain):
     committee = _test_staking_rpc(staking.get_super_committees)
     assert isinstance(committee, dict)
 
+
 def test_get_raw_median_stake_snapshot(setup_blockchain):
     median_stake = _test_staking_rpc(staking.get_raw_median_stake_snapshot)
     assert isinstance(median_stake, dict)
 
+
 def test_get_validator_information_by_block(setup_blockchain):
     # Apparently validator information not created until block after create-validator transaction is accepted, so +1 block
-    info = _test_staking_rpc(staking.get_validator_information_by_block_number, test_validator_address, 'latest', endpoint=explorer_endpoint)
+    info = _test_staking_rpc(
+        staking.get_validator_information_by_block_number,
+        test_validator_address,
+        "latest",
+        endpoint=explorer_endpoint,
+    )
     assert isinstance(info, dict)
 
+
 def test_get_validator_information_by_block(setup_blockchain):
     # Apparently validator information not created until block after create-validator transaction is accepted, so +1 block
-    info = _test_staking_rpc(staking.get_all_validator_information_by_block_number, 'latest', endpoint=explorer_endpoint)
+    info = _test_staking_rpc(
+        staking.get_all_validator_information_by_block_number,
+        "latest",
+        endpoint=explorer_endpoint,
+    )
     assert isinstance(info, list)
 
+
 def test_get_delegations_by_delegator_by_block(setup_blockchain):
-    delegations = _test_staking_rpc(staking.get_delegations_by_delegator_by_block_number, test_validator_address, 'latest', endpoint=explorer_endpoint)
+    delegations = _test_staking_rpc(
+        staking.get_delegations_by_delegator_by_block_number,
+        test_validator_address,
+        "latest",
+        endpoint=explorer_endpoint,
+    )
     assert isinstance(delegations, list)
 
+
 def test_get_elected_validator_addresses(setup_blockchain):
     validator_addresses = _test_staking_rpc(staking.get_elected_validator_addresses)
     assert isinstance(validator_addresses, list)
     assert len(validator_addresses) > 0
 
+
 def test_get_validators(setup_blockchain):
     validators = _test_staking_rpc(staking.get_validators, 2)
     assert isinstance(validators, dict)
-    assert len(validators['validators']) > 0
+    assert len(validators["validators"]) > 0
+
 
 def test_get_validator_keys(setup_blockchain):
     validators = _test_staking_rpc(staking.get_validator_keys, 2)
     assert isinstance(validators, list)
 
+
 def test_get_validator_self_delegation(setup_blockchain):
-    self_delegation = _test_staking_rpc(staking.get_validator_self_delegation, test_validator_address)
+    self_delegation = _test_staking_rpc(
+        staking.get_validator_self_delegation, test_validator_address
+    )
     assert isinstance(self_delegation, int)
     assert self_delegation > 0
 
+
 def test_get_validator_total_delegation(setup_blockchain):
-    total_delegation = _test_staking_rpc(staking.get_validator_total_delegation, test_validator_address)
+    total_delegation = _test_staking_rpc(
+        staking.get_validator_total_delegation, test_validator_address
+    )
     assert isinstance(total_delegation, int)
     assert total_delegation > 0
 
+
 def test_get_all_delegation_information(setup_blockchain):
-    delegation_information = _test_staking_rpc(staking.get_all_delegation_information, 0)
+    delegation_information = _test_staking_rpc(
+        staking.get_all_delegation_information, 0
+    )
     assert isinstance(delegation_information, list)
     assert len(delegation_information) > 0
 
+
 def test_get_delegation_by_delegator_and_validator(setup_blockchain):
-    delegation_information = _test_staking_rpc(staking.get_delegation_by_delegator_and_validator, test_validator_address, test_validator_address)
+    delegation_information = _test_staking_rpc(
+        staking.get_delegation_by_delegator_and_validator,
+        test_validator_address,
+        test_validator_address,
+    )
     assert isinstance(delegation_information, dict)
 
+
 def test_get_available_redelegation_balance(setup_blockchain):
-    redelgation_balance = _test_staking_rpc(staking.get_available_redelegation_balance, test_validator_address)
+    redelgation_balance = _test_staking_rpc(
+        staking.get_available_redelegation_balance, test_validator_address
+    )
     assert isinstance(redelgation_balance, int)
     assert redelgation_balance == 0
 
+
 def test_get_total_staking(setup_blockchain):
     total_staking = _test_staking_rpc(staking.get_total_staking)
     assert isinstance(total_staking, int)
-    if staking.get_validator_information(test_validator_address, explorer_endpoint)[ 'active-status' ] == 'active':
+    if (
+        staking.get_validator_information(test_validator_address, explorer_endpoint)[
+            "active-status"
+        ]
+        == "active"
+    ):
         assert total_staking > 0
 
+
 def test_errors():
     with pytest.raises(exceptions.RPCError):
         staking.get_all_validator_addresses(fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_validator_information('', fake_shard)
+        staking.get_validator_information("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         staking.get_elected_validator_addresses(fake_shard)
     with pytest.raises(exceptions.RPCError):
@@ -137,27 +193,27 @@ def test_errors():
     with pytest.raises(exceptions.RPCError):
         staking.get_validator_keys(1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_validator_information_by_block_number('', 1, fake_shard)
+        staking.get_validator_information_by_block_number("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
         staking.get_all_validator_information(-1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_validator_self_delegation('', fake_shard)
+        staking.get_validator_self_delegation("", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_validator_total_delegation('', fake_shard)
+        staking.get_validator_total_delegation("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         staking.get_all_validator_information_by_block_number(1, 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
         staking.get_all_delegation_information(1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_delegations_by_delegator('', fake_shard)
+        staking.get_delegations_by_delegator("", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_delegations_by_delegator_by_block_number('', 1, fake_shard)
+        staking.get_delegations_by_delegator_by_block_number("", 1, fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_delegation_by_delegator_and_validator('', '', fake_shard)
+        staking.get_delegation_by_delegator_and_validator("", "", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_available_redelegation_balance('', fake_shard)
+        staking.get_available_redelegation_balance("", fake_shard)
     with pytest.raises(exceptions.RPCError):
-        staking.get_delegations_by_validator('', fake_shard)
+        staking.get_delegations_by_validator("", fake_shard)
     with pytest.raises(exceptions.RPCError):
         staking.get_current_utility_metrics(fake_shard)
     with pytest.raises(exceptions.RPCError):
diff --git a/tests/sdk-pyhmy/test_staking_signing.py b/tests/sdk-pyhmy/test_staking_signing.py
index 9e7aefe..b947cbb 100644
--- a/tests/sdk-pyhmy/test_staking_signing.py
+++ b/tests/sdk-pyhmy/test_staking_signing.py
@@ -1,11 +1,6 @@
-from pyhmy import (
-    staking_signing,
-    staking_structures
-)
+from pyhmy import staking_signing, staking_structures
 
-from pyhmy.numbers import (
-    convert_one_to_atto
-)
+from pyhmy.numbers import convert_one_to_atto
 
 # other transactions (create/edit validator) are in test_validator.py
 # test_delegate is the same as test_undelegate (except the directive) so it has been omitted
@@ -56,17 +51,26 @@ const signed = stakingTx.rlpSign('4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_collect_rewards_chain_id():
     transaction_dict = {
-        'directive': staking_structures.Directive.CollectRewards,
-        'delegatorAddress': 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9',
-        'nonce': 2,
-        'gasPrice': int(convert_one_to_atto(1)),
-        'gasLimit': 100,
-        'chainId': 1,           # with chainId for coverage
+        "directive": staking_structures.Directive.CollectRewards,
+        "delegatorAddress": "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9",
+        "nonce": 2,
+        "gasPrice": int(convert_one_to_atto(1)),
+        "gasLimit": 100,
+        "chainId": 1,  # with chainId for coverage
     }
-    signed_tx = staking_signing.sign_staking_transaction(transaction_dict, '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48')
-    assert signed_tx.rawTransaction.hex() == '0xf86504d594ebcd16e8c1d8f493ba04e99a56474122d81a9c5802880de0b6b3a76400006425a055d6c3c0d8e7a1e75152db361a2ed47f5ab54f6f19b0d8e549953dbdf13ba647a076e1367dfca38eae3bd0e8da296335acabbaeb87dc17e47ebe4942db29334099'
+    signed_tx = staking_signing.sign_staking_transaction(
+        transaction_dict,
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+    )
+    assert (
+        signed_tx.rawTransaction.hex()
+        == "0xf86504d594ebcd16e8c1d8f493ba04e99a56474122d81a9c5802880de0b6b3a76400006425a055d6c3c0d8e7a1e75152db361a2ed47f5ab54f6f19b0d8e549953dbdf13ba647a076e1367dfca38eae3bd0e8da296335acabbaeb87dc17e47ebe4942db29334099"
+    )
+
 
 """
 let stakingTx
@@ -87,16 +91,24 @@ const signed = stakingTx.rlpSign('4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_delegate():
     transaction_dict = {
-        'directive': staking_structures.Directive.Delegate,
-        'delegatorAddress': 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9',
-        'validatorAddress': 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9',
-        'amount': 5,
-        'nonce': 2,
-        'gasPrice': int(convert_one_to_atto(1)),
-        'gasLimit': 100,
-        'chainId': 2,
+        "directive": staking_structures.Directive.Delegate,
+        "delegatorAddress": "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9",
+        "validatorAddress": "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9",
+        "amount": 5,
+        "nonce": 2,
+        "gasPrice": int(convert_one_to_atto(1)),
+        "gasLimit": 100,
+        "chainId": 2,
     }
-    signed_tx = staking_signing.sign_staking_transaction(transaction_dict, '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48')
-    assert signed_tx.rawTransaction.hex() == '0xf87b02eb94ebcd16e8c1d8f493ba04e99a56474122d81a9c5894ebcd16e8c1d8f493ba04e99a56474122d81a9c580502880de0b6b3a76400006428a0c856fd483a989ca4db4b5257f6996729527828fb21ec13cc65f0bffe6c015ab1a05e9d3c92742e8cb7450bebdfb7ad277ccbfc9fa0719db0b12a715a0a173cadd6'
+    signed_tx = staking_signing.sign_staking_transaction(
+        transaction_dict,
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+    )
+    assert (
+        signed_tx.rawTransaction.hex()
+        == "0xf87b02eb94ebcd16e8c1d8f493ba04e99a56474122d81a9c5894ebcd16e8c1d8f493ba04e99a56474122d81a9c580502880de0b6b3a76400006428a0c856fd483a989ca4db4b5257f6996729527828fb21ec13cc65f0bffe6c015ab1a05e9d3c92742e8cb7450bebdfb7ad277ccbfc9fa0719db0b12a715a0a173cadd6"
+    )
diff --git a/tests/sdk-pyhmy/test_transaction.py b/tests/sdk-pyhmy/test_transaction.py
index 2bbcd61..3194e5d 100644
--- a/tests/sdk-pyhmy/test_transaction.py
+++ b/tests/sdk-pyhmy/test_transaction.py
@@ -1,157 +1,205 @@
 import pytest
 
-from pyhmy import (
-    transaction
-)
+from pyhmy import transaction
 
-from pyhmy.rpc import (
-    exceptions
-)
+from pyhmy.rpc import exceptions
 
 
-endpoint = 'http://localhost:9500'
-endpoint_shard_one = 'http://localhost:9502'
-fake_shard = 'http://example.com'
+endpoint = "http://localhost:9500"
+endpoint_shard_one = "http://localhost:9502"
+fake_shard = "http://example.com"
 
 # previously sent txs to get and check
-tx_hash = '0xc26be5776aa57438bccf196671a2d34f3f22c9c983c0f844c62b2fb90403aa43'
+tx_hash = "0xc26be5776aa57438bccf196671a2d34f3f22c9c983c0f844c62b2fb90403aa43"
 tx_block_num = None
 tx_block_hash = None
 tx_index = None
 
-cx_hash = '0xf73ba634cb96fc0e3e2c9d3b4c91379e223741be4a5aa56e6d6caf49c1ae75cf'
+cx_hash = "0xf73ba634cb96fc0e3e2c9d3b4c91379e223741be4a5aa56e6d6caf49c1ae75cf"
 
-stx_hash = '0xc8177ace2049d9f4eb4a45fd6bd6b16f693573d036322c36774cc00d05a3e24f'
+stx_hash = "0xc8177ace2049d9f4eb4a45fd6bd6b16f693573d036322c36774cc00d05a3e24f"
 stx_block_num = None
 stx_block_hash = None
 stx_index = None
 
 # new txs to send and check
-raw_tx = '0xf86f0385174876e800825208808094c9c6d47ee5f2e3e08d7367ad1a1373ba9dd172418905b12aefafa80400008027a07a4952b90bf38723a9197179a8e6d2e9b3a86fd6da4e66a9cf09fdc59783f757a053910798b311245525bd77d6119332458c2855102e4fb9e564f6a3b710d18bb0'
-raw_tx_hash = '0x7ccd80f8513f76ec58b357c7a82a12a95e025d88f1444e953f90e3d86e222571'
+raw_tx = "0xf86f0385174876e800825208808094c9c6d47ee5f2e3e08d7367ad1a1373ba9dd172418905b12aefafa80400008027a07a4952b90bf38723a9197179a8e6d2e9b3a86fd6da4e66a9cf09fdc59783f757a053910798b311245525bd77d6119332458c2855102e4fb9e564f6a3b710d18bb0"
+raw_tx_hash = "0x7ccd80f8513f76ec58b357c7a82a12a95e025d88f1444e953f90e3d86e222571"
+
+raw_stx = "0xf88302f494c9c6d47ee5f2e3e08d7367ad1a1373ba9dd1724194a5241513da9f4463f1d4874b548dfbac29d91f3489056bc75e2d631000008085174876e80082c35027a0808ea7d27adf3b1f561e8da4676814084bb75ac541b616bece87c6446e6cc54ea02f19f0b14240354bd42ad60b0c7189873c0be87044e13072b0981a837ca76f64"
+raw_stx_hash = "0xe7d07ef6d9fca595a14ceb0ca917bece7bedb15efe662300e9334a32ac1da629"
 
-raw_stx = '0xf88302f494c9c6d47ee5f2e3e08d7367ad1a1373ba9dd1724194a5241513da9f4463f1d4874b548dfbac29d91f3489056bc75e2d631000008085174876e80082c35027a0808ea7d27adf3b1f561e8da4676814084bb75ac541b616bece87c6446e6cc54ea02f19f0b14240354bd42ad60b0c7189873c0be87044e13072b0981a837ca76f64'
-raw_stx_hash = '0xe7d07ef6d9fca595a14ceb0ca917bece7bedb15efe662300e9334a32ac1da629'
 
 def _test_transaction_rpc(fn, *args, **kwargs):
     if not callable(fn):
-        pytest.fail(f'Invalid function: {fn}')
+        pytest.fail(f"Invalid function: {fn}")
 
     try:
         response = fn(*args, **kwargs)
     except Exception as e:
-        if isinstance(e, exceptions.RPCError) and 'does not exist/is not available' in str(e):
-            pytest.skip(f'{str(e)}')
-        pytest.fail(f'Unexpected error: {e.__class__} {e}')
+        if isinstance(
+            e, exceptions.RPCError
+        ) and "does not exist/is not available" in str(e):
+            pytest.skip(f"{str(e)}")
+        pytest.fail(f"Unexpected error: {e.__class__} {e}")
     return response
 
+
 def test_get_pending_transactions(setup_blockchain):
     pool = _test_transaction_rpc(transaction.get_pending_transactions)
     assert isinstance(pool, list)
 
+
 def test_get_transaction_by_hash(setup_blockchain):
-    tx = _test_transaction_rpc(transaction.get_transaction_by_hash, tx_hash, endpoint=endpoint)
+    tx = _test_transaction_rpc(
+        transaction.get_transaction_by_hash, tx_hash, endpoint=endpoint
+    )
     assert tx
     assert isinstance(tx, dict)
-    assert 'blockNumber' in tx.keys()
-    assert 'blockHash' in tx.keys()
+    assert "blockNumber" in tx.keys()
+    assert "blockHash" in tx.keys()
     global tx_block_num
-    tx_block_num = int(tx['blockNumber'])
+    tx_block_num = int(tx["blockNumber"])
     global tx_block_hash
-    tx_block_hash = tx['blockHash']
+    tx_block_hash = tx["blockHash"]
     global tx_index
-    tx_index = int(tx[ 'transactionIndex' ])
+    tx_index = int(tx["transactionIndex"])
+
 
 def test_get_transaction_by_block_hash_and_index(setup_blockchain):
     if not tx_block_hash:
-        pytest.skip('Failed to get reference block hash')
-    tx = _test_transaction_rpc(transaction.get_transaction_by_block_hash_and_index,
-                               tx_block_hash, tx_index, endpoint=endpoint)
+        pytest.skip("Failed to get reference block hash")
+    tx = _test_transaction_rpc(
+        transaction.get_transaction_by_block_hash_and_index,
+        tx_block_hash,
+        tx_index,
+        endpoint=endpoint,
+    )
     assert tx
     assert isinstance(tx, dict)
 
+
 def test_get_transaction_by_block_number_and_index(setup_blockchain):
     if not tx_block_num:
-        pytest.skip('Failed to get reference block num')
-    tx = _test_transaction_rpc(transaction.get_transaction_by_block_number_and_index, tx_block_num, tx_index,
-                               endpoint=endpoint)
+        pytest.skip("Failed to get reference block num")
+    tx = _test_transaction_rpc(
+        transaction.get_transaction_by_block_number_and_index,
+        tx_block_num,
+        tx_index,
+        endpoint=endpoint,
+    )
     assert tx
     assert isinstance(tx, dict)
 
+
 def test_get_transaction_receipt(setup_blockchain):
-    tx_receipt = _test_transaction_rpc(transaction.get_transaction_receipt, tx_hash, endpoint=endpoint)
+    tx_receipt = _test_transaction_rpc(
+        transaction.get_transaction_receipt, tx_hash, endpoint=endpoint
+    )
     assert tx_receipt
     assert isinstance(tx_receipt, dict)
 
+
 def test_get_transaction_error_sink(setup_blockchain):
     errors = _test_transaction_rpc(transaction.get_transaction_error_sink)
     assert isinstance(errors, list)
 
+
 def test_send_and_confirm_raw_transaction(setup_blockchain):
     # Note: this test is not yet idempotent since the localnet will reject transactions which were previously finalized.
-    test_tx = _test_transaction_rpc(transaction.send_and_confirm_raw_transaction,
-                raw_tx)
+    test_tx = _test_transaction_rpc(
+        transaction.send_and_confirm_raw_transaction, raw_tx
+    )
     assert isinstance(test_tx, dict)
-    assert test_tx[ 'hash' ] == raw_tx_hash
+    assert test_tx["hash"] == raw_tx_hash
+
 
 def test_get_pending_cx_receipts(setup_blockchain):
     pending = _test_transaction_rpc(transaction.get_pending_cx_receipts)
     assert isinstance(pending, list)
 
+
 def test_get_cx_receipt_by_hash(setup_blockchain):
-    cx = _test_transaction_rpc(transaction.get_cx_receipt_by_hash, cx_hash, endpoint_shard_one)
+    cx = _test_transaction_rpc(
+        transaction.get_cx_receipt_by_hash, cx_hash, endpoint_shard_one
+    )
     assert cx
     assert isinstance(cx, dict)
 
+
 def test_resend_cx_receipt(setup_blockchain):
     sent = _test_transaction_rpc(transaction.resend_cx_receipt, cx_hash)
     assert isinstance(sent, bool)
     assert sent
 
+
 def test_get_staking_transaction_by_hash(setup_blockchain):
-    staking_tx = _test_transaction_rpc(transaction.get_staking_transaction_by_hash, stx_hash)
+    staking_tx = _test_transaction_rpc(
+        transaction.get_staking_transaction_by_hash, stx_hash
+    )
     assert staking_tx
     assert isinstance(staking_tx, dict)
-    assert 'blockNumber' in staking_tx.keys()
-    assert 'blockHash' in staking_tx.keys()
+    assert "blockNumber" in staking_tx.keys()
+    assert "blockHash" in staking_tx.keys()
     global stx_block_num
-    stx_block_num = int(staking_tx['blockNumber'])
+    stx_block_num = int(staking_tx["blockNumber"])
     global stx_block_hash
-    stx_block_hash = staking_tx['blockHash']
+    stx_block_hash = staking_tx["blockHash"]
     global stx_index
-    stx_index = int(staking_tx['transactionIndex'])
+    stx_index = int(staking_tx["transactionIndex"])
+
 
 def test_get_transaction_by_block_hash_and_index(setup_blockchain):
     if not stx_block_hash:
-        pytest.skip('Failed to get reference block hash')
-    stx = _test_transaction_rpc(transaction.get_staking_transaction_by_block_hash_and_index, stx_block_hash, stx_index)
+        pytest.skip("Failed to get reference block hash")
+    stx = _test_transaction_rpc(
+        transaction.get_staking_transaction_by_block_hash_and_index,
+        stx_block_hash,
+        stx_index,
+    )
     assert stx
     assert isinstance(stx, dict)
 
+
 def test_get_transaction_by_block_number_and_index(setup_blockchain):
     if not stx_block_num:
-        pytest.skip('Failed to get reference block num')
-    stx = _test_transaction_rpc(transaction.get_staking_transaction_by_block_number_and_index, stx_block_num, stx_index)
+        pytest.skip("Failed to get reference block num")
+    stx = _test_transaction_rpc(
+        transaction.get_staking_transaction_by_block_number_and_index,
+        stx_block_num,
+        stx_index,
+    )
     assert stx
     assert isinstance(stx, dict)
 
+
 def test_get_staking_transaction_error_sink(setup_blockchain):
     errors = _test_transaction_rpc(transaction.get_staking_transaction_error_sink)
     assert isinstance(errors, list)
 
+
 def test_send_raw_staking_transaction(setup_blockchain):
-    test_stx = _test_transaction_rpc(transaction.send_and_confirm_raw_staking_transaction, raw_stx, endpoint=endpoint)
+    test_stx = _test_transaction_rpc(
+        transaction.send_and_confirm_raw_staking_transaction, raw_stx, endpoint=endpoint
+    )
     assert isinstance(test_stx, dict)
-    assert test_stx[ 'hash' ] == raw_stx_hash
+    assert test_stx["hash"] == raw_stx_hash
+
 
 def test_get_pool_stats(setup_blockchain):
-    test_pool_stats = _test_transaction_rpc(transaction.get_pool_stats, endpoint=endpoint)
+    test_pool_stats = _test_transaction_rpc(
+        transaction.get_pool_stats, endpoint=endpoint
+    )
     assert isinstance(test_pool_stats, dict)
 
+
 def test_get_pending_staking_transactions(setup_blockchain):
-    pending_staking_transactions = _test_transaction_rpc(transaction.get_pending_staking_transactions, endpoint=endpoint)
+    pending_staking_transactions = _test_transaction_rpc(
+        transaction.get_pending_staking_transactions, endpoint=endpoint
+    )
     assert isinstance(pending_staking_transactions, list)
 
+
 def test_errors():
     with pytest.raises(exceptions.RPCError):
         transaction.get_pending_transactions(fake_shard)
@@ -160,30 +208,34 @@ def test_errors():
     with pytest.raises(exceptions.RPCError):
         transaction.get_pool_stats(fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_transaction_by_hash('', endpoint=fake_shard)
+        transaction.get_transaction_by_hash("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_transaction_by_block_hash_and_index('', 1, endpoint=fake_shard)
+        transaction.get_transaction_by_block_hash_and_index("", 1, endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
         transaction.get_transaction_by_block_number_and_index(1, 1, endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_transaction_receipt('', endpoint=fake_shard)
+        transaction.get_transaction_receipt("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.send_raw_transaction('', endpoint=fake_shard)
+        transaction.send_raw_transaction("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
         transaction.get_pending_cx_receipts(fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_cx_receipt_by_hash('', endpoint=fake_shard)
+        transaction.get_cx_receipt_by_hash("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.resend_cx_receipt('', endpoint=fake_shard)
+        transaction.resend_cx_receipt("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_staking_transaction_by_hash('', endpoint=fake_shard)
+        transaction.get_staking_transaction_by_hash("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.get_staking_transaction_by_block_hash_and_index('', 1, endpoint=fake_shard)
+        transaction.get_staking_transaction_by_block_hash_and_index(
+            "", 1, endpoint=fake_shard
+        )
     with pytest.raises(exceptions.RPCError):
-        transaction.get_staking_transaction_by_block_number_and_index(1, 1, endpoint=fake_shard)
+        transaction.get_staking_transaction_by_block_number_and_index(
+            1, 1, endpoint=fake_shard
+        )
     with pytest.raises(exceptions.RPCError):
         transaction.get_staking_transaction_error_sink(endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
-        transaction.send_raw_staking_transaction('', endpoint=fake_shard)
+        transaction.send_raw_staking_transaction("", endpoint=fake_shard)
     with pytest.raises(exceptions.RPCError):
         transaction.get_pending_staking_transactions(endpoint=fake_shard)
diff --git a/tests/sdk-pyhmy/test_validator.py b/tests/sdk-pyhmy/test_validator.py
index f6269e8..21f33b7 100644
--- a/tests/sdk-pyhmy/test_validator.py
+++ b/tests/sdk-pyhmy/test_validator.py
@@ -1,19 +1,11 @@
 import pytest
-from decimal import (
-    Decimal
-)
+from decimal import Decimal
 
-from pyhmy import (
-    validator
-)
+from pyhmy import validator
 
-from pyhmy.numbers import (
-    convert_one_to_atto
-)
+from pyhmy.numbers import convert_one_to_atto
 
-from pyhmy.exceptions import (
-    InvalidValidatorError
-)
+from pyhmy.exceptions import InvalidValidatorError
 
 test_epoch_number = 0
 genesis_block_number = 0
@@ -21,33 +13,42 @@ test_block_number = 1
 test_validator_object = None
 test_validator_loaded = False
 
+
 def test_instantiate_validator(setup_blockchain):
     global test_validator_object
-    test_validator_object = validator.Validator('one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9')
+    test_validator_object = validator.Validator(
+        "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9"
+    )
     assert isinstance(test_validator_object, validator.Validator)
 
+
 def test_load_validator(setup_blockchain):
     if not test_validator_object:
-        pytest.skip('Validator not instantiated yet')
+        pytest.skip("Validator not instantiated yet")
     info = {
-        'name': 'Alice',
-        'identity': 'alice',
-        'website': 'alice.harmony.one',
-        'details': "Don't mess with me!!!",
-        'security-contact': 'Bob',
-        'min-self-delegation': convert_one_to_atto(10000),
-        'amount': convert_one_to_atto(10001),
-        'max-rate': '0.9',
-        'max-change-rate': '0.05',
-        'rate': '0.01',
-        'bls-public-keys': ['0x30b2c38b1316da91e068ac3bd8751c0901ef6c02a1d58bc712104918302c6ed03d5894671d0c816dad2b4d303320f202'],
-        'bls-key-sigs': ['0x68f800b6adf657b674903e04708060912b893b7c7b500788808247550ab3e186e56a44ebf3ca488f8ed1a42f6cef3a04bd5d2b2b7eb5a767848d3135b362e668ce6bba42c7b9d5666d8e3a83be707b5708e722c58939fe9b07c170f3b7062414'],
-        'max-total-delegation': convert_one_to_atto(40000)
+        "name": "Alice",
+        "identity": "alice",
+        "website": "alice.harmony.one",
+        "details": "Don't mess with me!!!",
+        "security-contact": "Bob",
+        "min-self-delegation": convert_one_to_atto(10000),
+        "amount": convert_one_to_atto(10001),
+        "max-rate": "0.9",
+        "max-change-rate": "0.05",
+        "rate": "0.01",
+        "bls-public-keys": [
+            "0x30b2c38b1316da91e068ac3bd8751c0901ef6c02a1d58bc712104918302c6ed03d5894671d0c816dad2b4d303320f202"
+        ],
+        "bls-key-sigs": [
+            "0x68f800b6adf657b674903e04708060912b893b7c7b500788808247550ab3e186e56a44ebf3ca488f8ed1a42f6cef3a04bd5d2b2b7eb5a767848d3135b362e668ce6bba42c7b9d5666d8e3a83be707b5708e722c58939fe9b07c170f3b7062414"
+        ],
+        "max-total-delegation": convert_one_to_atto(40000),
     }
     test_validator_object.load(info)
     global test_validator_loaded
     test_validator_loaded = True
 
+
 """
 TypeScript signature source (is outdated because the JS SDK has not been updated for SlotKeySigs)
 For now I have checked that the below transaction to localnet works
@@ -75,16 +76,23 @@ const signed = stakingTx.rlpSign('4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_create_validator_sign(setup_blockchain):
     if not (test_validator_object or test_validator_loaded):
-        pytest.skip('Validator not instantiated yet')
+        pytest.skip("Validator not instantiated yet")
     signed_hash = test_validator_object.sign_create_validator_transaction(
-            2,
-            int(convert_one_to_atto(1)),
-            100,
-            '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48',
-            2).rawTransaction.hex()
-    assert signed_hash == '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'
+        2,
+        int(convert_one_to_atto(1)),
+        100,
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+        2,
+    ).rawTransaction.hex()
+    assert (
+        signed_hash
+        == "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"
+    )
+
 
 """
 Signature matched from TypeScript (is outdated because the JS SDK has not been updated for SlotKeyToAddSig)
@@ -127,39 +135,46 @@ const signed = stakingTx.rlpSign('4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd
 console.log( 'Signed transaction' )
 console.log(signed)
 """
+
+
 def test_edit_validator_sign(setup_blockchain):
     if not (test_validator_object or test_validator_loaded):
-        pytest.skip('Validator not instantiated yet')
+        pytest.skip("Validator not instantiated yet")
     signed_hash = test_validator_object.sign_edit_validator_transaction(
-            2,
-            int(convert_one_to_atto(1)),
-            100,
-            '0.06',
-            '0xb9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b62247608612',   # remove key
-            "0xb9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b62247608611",   # add key
-            "0x68f800b6adf657b674903e04708060912b893b7c7b500788808247550ab3e186e56a44ebf3ca488f8ed1a42f6cef3a04bd5d2b2b7eb5a767848d3135b362e668ce6bba42c7b9d5666d8e3a83be707b5708e722c58939fe9b07c170f3b7062414",   # add key sig
-            '4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48',
-            2).rawTransaction.hex()
-    assert signed_hash == '0xf9012101f8d094ebcd16e8c1d8f493ba04e99a56474122d81a9c58f83885416c69636585616c69636591616c6963652e6861726d6f6e792e6f6e6583426f6295446f6e2774206d6573732077697468206d65212121c887d529ae9e8600008a021e19e0c9bab24000008a0878678326eac9000000b0b9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b62247608612b0b9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b6224760861102880de0b6b3a76400006428a0782ed9f909b5c68eb050a917a274d9187a4c8f13799f21ba351bdcb11290c6c7a00a3b4ec8431290565acbbbb8231cafe32ed7c0b6211e7cf570b459cb733e0995'
+        2,
+        int(convert_one_to_atto(1)),
+        100,
+        "0.06",
+        "0xb9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b62247608612",  # remove key
+        "0xb9486167ab9087ab818dc4ce026edb5bf216863364c32e42df2af03c5ced1ad181e7d12f0e6dd5307a73b62247608611",  # add key
+        "0x68f800b6adf657b674903e04708060912b893b7c7b500788808247550ab3e186e56a44ebf3ca488f8ed1a42f6cef3a04bd5d2b2b7eb5a767848d3135b362e668ce6bba42c7b9d5666d8e3a83be707b5708e722c58939fe9b07c170f3b7062414",  # add key sig
+        "4edef2c24995d15b0e25cbd152fb0e2c05d3b79b9c2afd134e6f59f91bf99e48",
+        2,
+    ).rawTransaction.hex()
+    assert (
+        signed_hash
+        == "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"
+    )
+
 
 def test_invalid_validator(setup_blockchain):
     if not (test_validator_object or test_validator_loaded):
-        pytest.skip('Validator not instantiated yet')
+        pytest.skip("Validator not instantiated yet")
     with pytest.raises(InvalidValidatorError):
         info = {
-            'name': 'Alice',
+            "name": "Alice",
         }
         test_validator_object.load(info)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_name('a'*141)
+        test_validator_object.set_name("a" * 141)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_identity('a'*141)
+        test_validator_object.set_identity("a" * 141)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_website('a'*141)
+        test_validator_object.set_website("a" * 141)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_security_contact('a'*141)
+        test_validator_object.set_security_contact("a" * 141)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_details('a'*281)
+        test_validator_object.set_details("a" * 281)
     with pytest.raises(InvalidValidatorError):
         test_validator_object.set_min_self_delegation(1)
     with pytest.raises(InvalidValidatorError):
@@ -167,22 +182,26 @@ def test_invalid_validator(setup_blockchain):
     with pytest.raises(InvalidValidatorError):
         test_validator_object.set_amount(1)
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_max_rate('2.0')
+        test_validator_object.set_max_rate("2.0")
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_max_change_rate('-2.0')
+        test_validator_object.set_max_change_rate("-2.0")
     with pytest.raises(InvalidValidatorError):
-        test_validator_object.set_rate('-2.0')
+        test_validator_object.set_rate("-2.0")
+
 
 def test_validator_getters(setup_blockchain):
     if not (test_validator_object or test_validator_loaded):
-        pytest.skip('Validator not instantiated yet')
-    assert test_validator_object.get_address() == 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9'
-    assert test_validator_object.add_bls_key('5')
-    assert test_validator_object.remove_bls_key('5')
-    assert test_validator_object.get_name() == 'Alice'
-    assert test_validator_object.get_identity() == 'alice'
-    assert test_validator_object.get_website() == 'alice.harmony.one'
-    assert test_validator_object.get_security_contact() == 'Bob'
+        pytest.skip("Validator not instantiated yet")
+    assert (
+        test_validator_object.get_address()
+        == "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9"
+    )
+    assert test_validator_object.add_bls_key("5")
+    assert test_validator_object.remove_bls_key("5")
+    assert test_validator_object.get_name() == "Alice"
+    assert test_validator_object.get_identity() == "alice"
+    assert test_validator_object.get_website() == "alice.harmony.one"
+    assert test_validator_object.get_security_contact() == "Bob"
     assert test_validator_object.get_details() == "Don't mess with me!!!"
     assert isinstance(test_validator_object.get_min_self_delegation(), Decimal)
     assert isinstance(test_validator_object.get_max_total_delegation(), Decimal)
@@ -192,6 +211,9 @@ def test_validator_getters(setup_blockchain):
     assert isinstance(test_validator_object.get_rate(), Decimal)
     assert len(test_validator_object.get_bls_keys()) > 0
 
+
 def test_validator_load_from_blockchain(setup_blockchain):
-    test_validator_object2 = validator.Validator('one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3')
+    test_validator_object2 = validator.Validator(
+        "one155jp2y76nazx8uw5sa94fr0m4s5aj8e5xm6fu3"
+    )
     test_validator_object2.load_from_blockchain()
diff --git a/tests/util-pyhmy/test_util.py b/tests/util-pyhmy/test_util.py
index e278ef2..2988c47 100644
--- a/tests/util-pyhmy/test_util.py
+++ b/tests/util-pyhmy/test_util.py
@@ -19,41 +19,52 @@ def setup():
 
 
 def test_json_load():
-    dec = util.json_load('1.1', parse_float=decimal.Decimal)
+    dec = util.json_load("1.1", parse_float=decimal.Decimal)
     assert isinstance(dec, decimal.Decimal)
     assert float(dec) == 1.1
-    ref_dict = {
-        'test': 'val',
-        'arr': [
-            1,
-            2,
-            3
-        ]
-    }
+    ref_dict = {"test": "val", "arr": [1, 2, 3]}
     loaded_dict = util.json_load(json.dumps(ref_dict))
     assert str(ref_dict) == str(loaded_dict)
 
+
 def test_chain_id_to_int():
     assert util.chain_id_to_int(2) == 2
-    assert util.chain_id_to_int('HmyMainnet') == 1
+    assert util.chain_id_to_int("HmyMainnet") == 1
+
 
 def test_get_gopath():
     assert isinstance(util.get_gopath(), str)
 
+
 def test_get_goversion():
     assert isinstance(util.get_goversion(), str)
 
+
 def test_convert_one_to_hex():
-    assert util.convert_one_to_hex('0xebcd16e8c1d8f493ba04e99a56474122d81a9c58') == '0xeBCD16e8c1D8f493bA04E99a56474122D81A9c58'
-    assert util.convert_one_to_hex('one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9') == '0xeBCD16e8c1D8f493bA04E99a56474122D81A9c58'
+    assert (
+        util.convert_one_to_hex("0xebcd16e8c1d8f493ba04e99a56474122d81a9c58")
+        == "0xeBCD16e8c1D8f493bA04E99a56474122D81A9c58"
+    )
+    assert (
+        util.convert_one_to_hex("one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9")
+        == "0xeBCD16e8c1D8f493bA04E99a56474122D81A9c58"
+    )
+
 
 def test_convert_hex_to_one():
-    assert util.convert_hex_to_one('0xebcd16e8c1d8f493ba04e99a56474122d81a9c58') == 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9'
-    assert util.convert_hex_to_one('one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9') == 'one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9'
-    
+    assert (
+        util.convert_hex_to_one("0xebcd16e8c1d8f493ba04e99a56474122d81a9c58")
+        == "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9"
+    )
+    assert (
+        util.convert_hex_to_one("one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9")
+        == "one1a0x3d6xpmr6f8wsyaxd9v36pytvp48zckswvv9"
+    )
+
 
 def test_get_bls_build_variables():
     assert isinstance(util.get_bls_build_variables(), dict)
 
+
 def test_is_active_shard():
-    assert isinstance(util.is_active_shard(''), bool)
+    assert isinstance(util.is_active_shard(""), bool)