New submission from PBrudny <przedi...@gmail.com>:
There is an issue when NamedTuple parameter with default, which has not explicitly declared type is changed by keyword. Is that an expected behavior (no info https://docs.python.org/3.7/library/collections.html#collections.namedtuple) Used python release: Python 3.7.2 (tags/v3.7.2:9a3ffc0492, Dec 23 2018, 23:09:28) [MSC v.1916 64 bit (AMD64)] on win32 test.py: from typing import NamedTuple class MyTestedTuple(NamedTuple): example_text = "default_text" example_int: int = 3 if __name__ == '__main__': print(MyTestedTuple().example_text) fault_tuple = MyTestedTuple(example_text="text_from_call") print(fault_tuple.example_text) Call: python test.py default_text Traceback (most recent call last): File "test.py", line 11, in <module> fault_tuple = MyTestedTuple(example_text="text_from_call") TypeError: __new__() got an unexpected keyword argument 'example_text' ---------- components: Library (Lib) files: test.py messages: 349157 nosy: PBrudny priority: normal severity: normal status: open title: typing.NamedTuple default parameter type issue type: behavior versions: Python 3.7 Added file: https://bugs.python.org/file48533/test.py _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue37782> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
