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Update code example in "Declaring decorators" #14131

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Nov 18, 2022
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Update code example in "Declaring decorators" #14131

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Update code example in "Declaring decorators"
ChristianWitzler Nov 18, 2022
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hauntsaninja Nov 18, 2022
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6 changes: 3 additions & 3 deletions docs/source/generics.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -635,7 +635,7 @@ Before parameter specifications, here's how one might have annotated the decorat

.. code-block:: python

from typing import Callable, TypeVar
from typing import Any, Callable, TypeVar, cast

F = TypeVar('F', bound=Callable[..., Any])

Expand All @@ -650,8 +650,8 @@ and that would enable the following type checks:

.. code-block:: python

reveal_type(a) # str
add_forty_two('x') # Type check error: incompatible type "str"; expected "int"
reveal_type(a) # Revealed type is "builtins.int"
add_forty_two('x') # Argument 1 to "add_forty_two" has incompatible type "str"; expected "int"


Note that the ``wrapper()`` function is not type-checked. Wrapper
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