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import sys

import os.path

def locate_spy_module(module_name):

"""Tries to find shellpy module on filesystem. Given a module name it tries to locate it in pythonpath. It looks

for a module with the same name and __init__.spy inside of it

:param module_name: Filename without extension

:return: Path to shellpy file or None if not found

"""

for python_path in sys.path:

possible_module_path = os.path.join(python_path, module_name)

if os.path.exists(possible_module_path):

if os.path.exists(os.path.join(possible_module_path, '__init__.spy')):

return possible_module_path

return None

def locate_spy_file(file_name):

"""Tries to find shellpy file on filesystem. Given a filename without extension it tries to locate it with .spy

extension in pythonpath

:param file_name: Filename without extension

:return: Path to shellpy file or None if not found

"""

for python_path in sys.path:

possible_file_path = os.path.join(python_path, file_name + '.spy')

if os.path.exists(possible_file_path):

return possible_file_path

return None