in src/functions_framework/__init__.py [0:0]
def __init__(self, target=None, source=None, signature_type=None):
# Support HTTP frameworks which support WSGI callables.
# Note: this ability is currently broken in Gunicorn 20.0, and
# environment variables should be used for configuration instead:
# https://github.com/benoitc/gunicorn/issues/2159
self.target = target
self.source = source
self.signature_type = signature_type
# Placeholder for the app which will be initialized on first call
self.app = None