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bpo-46066: Deprecate kwargs syntax for TypedDict definitions (GH-31126)

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Closes python/typing#981

https://bugs.python.org/issue46066
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97littleleaf11 2022-02-17 11:26:07 +08:00 • committed by GitHub
parent 6f1efd19a7
commit de6043e596
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5 changed files with 35 additions and 10 deletions
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15
Lib/typing.py
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@ -2569,9 +2569,8 @@ def TypedDict(typename, fields=None, /, *, total=True, **kwargs):
The type info can be accessed via the Point2D.__annotations__ dict, and
the Point2D.__required_keys__ and Point2D.__optional_keys__ frozensets.
TypedDict supports two additional equivalent forms::
TypedDict supports an additional equivalent form::
Point2D = TypedDict('Point2D', x=int, y=int, label=str)
Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})
By default, all keys must be present in a TypedDict. It is possible
@ -2587,14 +2586,22 @@ def TypedDict(typename, fields=None, /, *, total=True, **kwargs):
the total argument. True is the default, and makes all items defined in the
class body be required.
The class syntax is only supported in Python 3.6+, while two other
syntax forms work for Python 2.7 and 3.2+
The class syntax is only supported in Python 3.6+, while the other
syntax form works for Python 2.7 and 3.2+
"""
if fields is None:
fields = kwargs
elif kwargs:
raise TypeError("TypedDict takes either a dict or keyword arguments,"
" but not both")
if kwargs:
warnings.warn(
"The kwargs-based syntax for TypedDict definitions is deprecated "
"in Python 3.11, will be removed in Python 3.13, and may not be "
"understood by third-party type checkers.",
DeprecationWarning,
stacklevel=2,
)
ns = {'__annotations__': dict(fields)}
module = _caller()