New submission from Erik Montnemery <e...@montnemery.com>:
typing.NamedTuple behaves in surprising ways when it has default arguments which lack type annotations: >>> from typing import NamedTuple >>> class MyTuple(NamedTuple): ... a = 1000 ... >>> tmp = MyTuple() >>> tmp.a 1000 >>> len(tmp) 0 >>> bool(tmp) False Tested in Python 3.8 and 3.9 ---------- messages: 407570 nosy: emontnemery priority: normal severity: normal status: open title: typing.NamedTuple with default arguments without type annotations is falsy type: behavior versions: Python 3.8, Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45972> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
