I'm on Python 3.9.6 and trying to make sense of the following behaviour: >>> from dataclasses import dataclass, fields >>> @dataclass ... class Foobar: ... name: str ... >>> fields(Foobar)[0].type <class 'str'> >>> type(fields(Foobar)[0].type) <class 'type'>
>>> from __future__ import annotations >>> from dataclasses import dataclass, fields >>> >>> @dataclass ... class Foobar: ... name: str ... >>> fields(Foobar)[0].type 'str' >>> type(fields(Foobar)[0].type) <class 'str'> I have a validation function that checks if the types of all fields in a dataclass are what they are supposed to be. But as soon as I import annotations from __future__ this validation breaks as the arg that I'm passing to isinstance() is no longer a type class but a string. What am I doing wrong? Thanks, -- Lukas -- https://mail.python.org/mailman/listinfo/python-list
