helpme.py

class EndpointA:
    def fetch(self):
        pass

class EndpointB:
    def fetch(self):
        pass

class EndpointC:
    def fetch(self):
        pass


class Module1:
    endpoints = (EndpointA, EndpointB)

    def render(self, fetched):
        pass


class Module2:
    endpoints = (EndpointA, EndpointC)

    def render(self, fetched):
        pass


def fetch_and_render_all():
    pass