Nick,

I think the error messages are incorrect. We expect error message to be `takes no argument` rather than `takes exactly one argument`. Can you please confirm that?

I think for the class without any method overrides, the functionality should be something like this:

     >>> class C:
    ...     pass
    ...
    >>> C(42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: C() takes no arguments
    >>> C.__new__(C, 42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: C() takes no arguments
    >>> C().__init__(42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: C().__init__() takes no arguments
    >>> object.__new__(C, 42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: C() takes no arguments
    >>> object.__init__(C(), 42)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: C().__init__() takes no arguments



Is that correct?