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Replace usage of List[...] with list[...] in typing docs (GH-28821)

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The ``List[...]`` form is deprecated since 3.9.
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Micael Jarniac 2021-10-09 00:33:37 -03:00 • committed by GitHub
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Doc/library/typing.rst
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@ -975,16 +975,16 @@ These can be used as types in annotations using ``[]``, each having a unique syn
For example:: For example::
def is_str_list(val: List[object]) -> TypeGuard[List[str]]: def is_str_list(val: list[object]) -> TypeGuard[list[str]]:
'''Determines whether all objects in the list are strings''' '''Determines whether all objects in the list are strings'''
return all(isinstance(x, str) for x in val) return all(isinstance(x, str) for x in val)
def func1(val: List[object]): def func1(val: list[object]):
if is_str_list(val): if is_str_list(val):
# Type of ``val`` is narrowed to ``List[str]``. # Type of ``val`` is narrowed to ``list[str]``.
print(" ".join(val)) print(" ".join(val))
else: else:
# Type of ``val`` remains as ``List[object]``. # Type of ``val`` remains as ``list[object]``.
print("Not a list of strings!") print("Not a list of strings!")
If ``is_str_list`` is a class or instance method, then the type in If ``is_str_list`` is a class or instance method, then the type in
@ -999,8 +999,8 @@ These can be used as types in annotations using ``[]``, each having a unique syn
``TypeB`` need not be a narrower form of ``TypeA`` -- it can even be a ``TypeB`` need not be a narrower form of ``TypeA`` -- it can even be a
wider form. The main reason is to allow for things like wider form. The main reason is to allow for things like
narrowing ``List[object]`` to ``List[str]`` even though the latter narrowing ``list[object]`` to ``list[str]`` even though the latter
is not a subtype of the former, since ``List`` is invariant. is not a subtype of the former, since ``list`` is invariant.
The responsibility of writing type-safe type guards is left to the user. The responsibility of writing type-safe type guards is left to the user.
``TypeGuard`` also works with type variables. For more information, see ``TypeGuard`` also works with type variables. For more information, see
@ -2065,8 +2065,8 @@ Introspection helpers
.. class:: ForwardRef .. class:: ForwardRef
A class used for internal typing representation of string forward references. A class used for internal typing representation of string forward references.
For example, ``List["SomeClass"]`` is implicitly transformed into For example, ``list["SomeClass"]`` is implicitly transformed into
``List[ForwardRef("SomeClass")]``. This class should not be instantiated by ``list[ForwardRef("SomeClass")]``. This class should not be instantiated by
a user, but may be used by introspection tools. a user, but may be used by introspection tools.
.. note:: .. note::