Python 3.10+typingterm

typing.ParamSpecKwargs

generics and parameters

The type of P.kwargs on a ParamSpec — the keyword arguments of the captured signature.

Syntax

P.kwargs  # тип ParamSpecKwargs

As with P.args, you don't name this type directly — a wrapper just uses **kwargs: P.kwargs. Both P.args and P.kwargs must appear together on the same function; a type checker treats using one alone as an error.

Examples

from typing import ParamSpec, ParamSpecKwargs
P = ParamSpec('P')
print(isinstance(P.kwargs, ParamSpecKwargs))   # → True
print(P.kwargs)   # → P.kwargs
print(P.kwargs.__origin__ is P)   # → True
def wrapper(*args: P.args, **kwargs: P.kwargs) -> None: pass
print(isinstance(P.args, ParamSpecKwargs))   # → False

See also

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