Python 3.10+typingterm

typing.ParamSpecArgs

generics and parameters

The type of P.args on a ParamSpec — the positional arguments of the captured signature.

Syntax

P.args  # тип ParamSpecArgs

You almost never spell this type out by name — a wrapper writes *args: P.args, **kwargs: P.kwargs and ParamSpecArgs falls out automatically. A type checker requires P.args and P.kwargs to appear together on the same function; one without the other is an error.

Examples

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

See also

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