Python Plugin Loader

__init__.py

import importlib
import pkgutil
import os

# Uses the package as the directory to search for plugins
plugin_directory=os.path.dirname(__file__)

# Loads all of the modules in this package
for module in pkgutil.iter_modules([plugin_directory]):
	name_index=1
	importlib.import_module('.' + module[name_index], __package__)

# Now you can do work by using baseclass.__subclasses__() 
# to retrieve all of the classes that implement the plugin 
# contract without needing to have a nasty list of imports 
# just to add a new plugin. Imagine the possibilities for 
# allowing end-users to add new plugins themselves.