Replace __import__ call with importlib.import_module
Replace __import__ call with importlib.import_module

As __import__'s docstring says:
"Import a module. Because this function is meant for use by the Python
interpreter and not for general use it is better to use
importlib.import_module() to programmatically import a module."

Also __import__ is a bit different in Python 2 and Python 3.

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