New submission from Gianni Mariani <gia...@mariani.ws>:
Using a frozendict as a default value should not cause an error in dataclasses. The check for mutability is: isinstance(f.default, (list, dict, set)) It appears frozendict has been changed to have a dict base class and it now raises an exception. There should be a way to indicate object mutability as the purpose of the isinstance(f.default, (list, dict, set)) check is for mutable default values. Using default_factory to work around this issue is cumbersome. ---------- components: Library (Lib) messages: 397799 nosy: gianni priority: normal severity: normal status: open title: dataclasses should allow frozendict default value type: compile error versions: Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44674> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
