zope.interface provides an implementation of PEP 246. That PEP defines a `__conform__` method objects can use to adapt themselves to a prototype:
>>> from zope.interface.common.numbers import IIntegral >>> class MyClass: ... def __init__(self, number: int): ... self.number = number ... def __conform__(self, prototype): ... if prototype is IIntegral: ... return self.number * 5 ... >>> IIntegral(MyClass(1)) 5 _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/4ONUXMAHPJMPH2RC2QYTFWXLOLHJ6VXO/ Code of Conduct: http://python.org/psf/codeofconduct/
