register classes to a dictionary

gistfile1.txt

registry = {}


def register_microservice(cls):
    name = cls.__name__
    force_bound = False
    if '__init__' in cls.__dict__:
        cls.__init__.func_globals[name] = cls
        force_bound = True
    try:
        registry[name] = cls()
    finally:
        if force_bound:
            del cls.__init__.func_globals[name]
    return cls


@register_microservice
class HelloWorld:
    pass

print(registry)
# {'HelloWorld': <__main__.HelloWorld object at 0x107ddfbd0>}