[pyhmy] Add library import warnings and version

pyhmy/__init__.py

@@ -1,14 +1,35 @@
-#
+import sys
-# This package relies on the fact that there is a CLI binary from some path
+import warnings
-# starting at the root of the file script importing this package.
+import pkg_resources
-# This package requires the pexpect package: https://pypi.org/project/pexpect/ .
+
-#
+from .cli import (
-
+    HmyCLI,
-from pyhmy.cli import HmyCLI, get_environment
+    get_environment,
-import os
+)
-
+
-# Find the CLI binary for HmyCLI.
+from .util import (
-for root, dirs, files in os.walk(os.path.curdir):
+    Typgpy,
-    if "hmy" in files:
+    get_gopath,
-        HmyCLI.hmy_binary_path = os.path.join(root, "hmy")
+    get_goversion,
-        break
+    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."
+        )
+    )
+    warnings.resetwarnings()
+
+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.resetwarnings()
+
+__version__ = pkg_resources.get_distribution("pyhmy").version