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bpo-43923: Add support for generic typing.NamedTuple (#92027)

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Serhiy Storchaka 2022-05-03 01:41:23 +03:00 • committed by GitHub
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commit b04e02c57f
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5 changed files with 66 additions and 4 deletions
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Doc/library/typing.rst
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@ -1615,6 +1615,12 @@ These are not used in annotations. They are building blocks for declaring types.
def __repr__(self) -> str:
return f'<Employee {self.name}, id={self.id}>'
``NamedTuple`` subclasses can be generic::
class Group(NamedTuple, Generic[T]):
key: T
group: list[T]
Backward-compatible usage::
Employee = NamedTuple('Employee', [('name', str), ('id', int)])
@ -1633,6 +1639,9 @@ These are not used in annotations. They are building blocks for declaring types.
Removed the ``_field_types`` attribute in favor of the more
standard ``__annotations__`` attribute which has the same information.
.. versionchanged:: 3.11
Added support for generic namedtuples.
.. class:: NewType(name, tp)
A helper class to indicate a distinct type to a typechecker,