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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def takes_arg(obj, arg: str) -> bool: """ Checks whether the provided obj takes a certain arg. If it's a class, we're really checking whether its constructor does. If it's a function or method, we're checking the object itself. Otherwise, we raise an error. """

    if inspect.isclass(obj):
        signature = inspect.signature(obj.__init__)
    elif inspect.ismethod(obj) or inspect.isfunction(obj):
        signature = inspect.signature(obj)
    else:
        raise ConfigurationError(f"object {obj} is not callable")
    return arg in signature.parameters