NEWBIE: opaque error message

[Darrell]

A hint.

>>> import copy
>>> class X:
...     def __deepcopy__(self):
...             pass
...
>>> x=X()
>>> copy.deepcopy(x)
Traceback (innermost last):
  File "<stdin>", line 1, in ?
  File "d:\python\Lib\copy.py", line 151, in deepcopy
    y = copierfunction(x, memo)
  File "d:\python\Lib\copy.py", line 221, in _deepcopy_inst
    return x.__deepcopy__(memo)
TypeError: too many arguments; expected 1, got 2
>>>

--
--Darrell