New submission from Eric V. Smith <e...@trueblade.com>:
Originally reported in https://github.com/ericvsmith/dataclasses/issues/154 import pickle from dataclasses import dataclass @dataclass(frozen=True, slots=True) class ExampleDataclass: foo: str bar: int assert ExampleDataclass.__slots__ == ("foo", "bar") assert pickle.loads( pickle.dumps(ExampleDataclass("a", 1)) ) == ExampleDataclass("a", 1) File "<string>", line 4, in __setattr__ dataclasses.FrozenInstanceError: cannot assign to field 'foo' I'll get a PR ready, likely based on ariebovenberg's solution in the above mentioned issue. ---------- assignee: eric.smith components: Library (Lib) messages: 392603 nosy: eric.smith priority: deferred blocker severity: normal status: open title: Cannot pickle frozen dataclasses with slots versions: Python 3.10 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43999> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
