brieftaube/BTvenv/lib/python3.6/site-packages/multidict/_compat.py

import os
import platform


NO_EXTENSIONS = bool(os.environ.get('MULTIDICT_NO_EXTENSIONS'))

PYPY = platform.python_implementation() == 'PyPy'

USE_CYTHON_EXTENSIONS = USE_CYTHON = not NO_EXTENSIONS and not PYPY