[issue45972] typing.NamedTuple with default arguments without type annotations is falsy

[Spencer Brown]

Spencer Brown <spencerb21 at live.com> added the comment:

What's happening is that typing.NamedTuple ignores non-annotated attributes entirely when computing the names it passes along to namedtuple(), so here "a" is just a class attribute. You're accessing it from there, but the tuple itself is entirely empty. Perhaps it should error out if no names at all are found?

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nosy: +Spencer Brown

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45972>
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