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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 stub(base_class=None, **attributes):
 """creates a python class on-the-fly with the given keyword-arguments as class-attributes accessible with .attrname. The new class inherits from Use this to mock rather than stub. """

    if base_class is None:
        base_class = object

    members = {
        "__init__": lambda self: None,
        "__new__": lambda *args, **kw: object.__new__(
            *args, *kw
        ),  # remove __new__ and metaclass behavior from object
        "__metaclass__": None,
    }
    members.update(attributes)
    # let's create a python class on-the-fly :)
    return type(f"{base_class.__name__}Stub", (base_class,), members)()