Formatting, remove unused imports & function

mythril/disassembler/disassembly.py

@@ -1,4 +1,4 @@
-from mythril.ether import asm,util
+from mythril.ether import asm, util
 from mythril.support.signatures import SignatureDb
 import logging
 
@@ -38,7 +38,7 @@ class Disassembly(object):
                 func_name = "_function_" + func_hash
 
             try:
-                offset = self.instruction_list[i+2]['argument']
+                offset = self.instruction_list[i + 2]['argument']
                 jump_target = int(offset, 16)
 
                 self.func_to_addr[func_name] = jump_target

mythril/ether/ethcontract.py

@@ -70,16 +70,3 @@ class ETHContract(persistent.Persistent):
                 continue
 
         return eval(str_eval.strip())
-
-
-class InstanceList(persistent.Persistent):
-
-    def __init__(self):
-        self.addresses = []
-        self.balances = []
-        pass
-
-    def add(self, address, balance=0):
-        self.addresses.append(address)
-        self.balances.append(balance)
-        self._p_changed = True

mythril/leveldb/client.py

@@ -1,13 +1,11 @@
-import plyvel
 import binascii
 import rlp
-import hashlib
 import logging
 from ethereum import utils
 from ethereum.block import BlockHeader, Block
-from mythril.leveldb.state import State, Account
+from mythril.leveldb.state import State
 from mythril.leveldb.eth_db import ETH_DB
-from mythril.ether.ethcontract import ETHContract, InstanceList
+from mythril.ether.ethcontract import ETHContract
 
 # Per https://github.com/ethereum/go-ethereum/blob/master/core/database_util.go
 # prefixes and suffixes for keys in geth
@@ -16,7 +14,8 @@ bodyPrefix = b'b'       # bodyPrefix + num (uint64 big endian) + hash -> block b
 numSuffix = b'n'        # headerPrefix + num (uint64 big endian) + numSuffix -> hash
 blockHashPrefix = b'H'  # blockHashPrefix + hash -> num (uint64 big endian)
 # known geth keys
-headHeaderKey = b'LastBlock' # head (latest) header hash
+headHeaderKey = b'LastBlock'  # head (latest) header hash
+
 
 def _formatBlockNumber(number):
     '''
@@ -24,12 +23,14 @@ def _formatBlockNumber(number):
     '''
     return utils.zpad(utils.int_to_big_endian(number), 8)
 
+
 def _encode_hex(v):
     '''
     encodes hash as hex
     '''
     return '0x' + utils.encode_hex(v)
 
+
 class EthLevelDB(object):
     '''
     Go-Ethereum LevelDB client class