Shared via mypy Playground

main.py

from functools import partial


def func(a: str, b: int) -> None:
    print(f"{a=}, {b=}")


partial_func = partial(
    func,
    # Argument 1 to "func" has incompatible type "**dict[str, int]"; expected "str"  [arg-type]
    **dict(b=42),
)
# Too many positional arguments for "func"  [misc]
partial_func("Hello")