Larry Hastings <la...@hastings.org> added the comment:
It occurs to me that part of this work should also be a new "best practices for __annotations__" entry in the Python docs. Best practices for working with annotations, for code that requires a minimum Python version of 3.10+: Best practice is to call either inspect.get_annotations() or typing.get_type_hints() to access annotations. But if you want to access '__annotations__' on an object directly: * Always access the annotations on an object using the attribute interface, either o.__annotations__ or getattr(o, '__annotations__'). Accessing '__annotations__' through other mechanisms (e.g. looking in the class dict) is unsupported. * Assume that o.__annotations__ is always either a dict or None. * It's best to not assign to o.__annotations__. But if you must, always set it to either a dict or None. * Never delete o.__annotations__. * Never modify o.__annotations__. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43901> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
