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You can use '' and '*' before the function parameter to accept a variable number of positional and keyword arguments, respectively. Then, within the function, you can check if only known keywords are used.

Here's an example implementation:

def my_func(*args, **kwargs):
    valid_keywords = ['foo', 'bar', 'baz']
    for kwarg in kwargs:
        if kwarg not in valid_keywords:
            raise TypeError(f"Invalid keyword argument: '{kwarg}'")

    # rest of the function code

Here, the my_func function accepts any number of positional arguments and keyword arguments. It then checks if any of the keyword arguments are not in the valid_keywords list, and raises a TypeError if an unknown keyword is used. You can adjust the valid_keywords list to include any keywords that are allowed.