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Self-referring NamedTuples #2399

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@not-raspberry

Description

@not-raspberry

node.py:

"""Tree node namedtuple demo."""
from typing import Tuple, NamedTuple



Node = NamedTuple(
    'Node',
    [
        ('name', str),
        ('children', Tuple['Node', ...]),
    ])

What happens:

$ mypy node.py
node.py:9: error: Invalid type "node.Node"
$ mypy --version
mypy 0.4.5

What should happen:

The checker should recognise the name of the NamedTuple even inside its definition.

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