call_with_appropriate_args.py

call_with_appropriate_args.py

def call_with_appropriate_args(fn, *args, **kwargs):
    """
    Call a function with only the arguments it can accept.

    This function inspects the signature of the given function and calls it with
    only the arguments that match its parameters. It filters out any excess
    arguments that are not part of the function's signature.

    Args:
        fn (callable): The function to be called.
        *args: Positional arguments to be passed to the function.
        **kwargs: Keyword arguments to be passed to the function.

    Returns:
        The result of calling the function with the filtered arguments.

    Example:
        def example_func(a, b):
            return a + b

        result = call_with_appropriate_args(example_func, a=1, b=2, c=3)
        # result will be 3, and 'c' will be ignored
    """
    sig = inspect.signature(fn)
    bound_args = sig.bind_partial(*args, **kwargs)
    bound_args.apply_defaults()

    # Filter out excess arguments
    filtered_args = {
        k: v for k, v in bound_args.arguments.items() if k in sig.parameters
    }
    return fn(**filtered_args)