If I understand you correctly, I think ParamSpec (since 3.10) is what you are looking for, especially if you want to be generic over the type of the inner function. The example from the docs (https://docs.python.org/3/library/typing.html#typing.ParamSp...):
from collections.abc import Callable
from typing import TypeVar, ParamSpec
import logging
T = TypeVar('T')
P = ParamSpec('P')
def add_logging(f: Callable[P, T]) -> Callable[P, T]:
'''A type-safe decorator to add logging to a function.'''
def inner(*args: P.args, **kwargs: P.kwargs) -> T:
logging.info(f'{f.__name__} was called')
return f(*args, **kwargs)
return inner
@add_logging
def add_two(x: float, y: float) -> float:
'''Add two numbers together.'''
return x + y
