>> try this: >> class x(object): >> def __init__(self): >> self.someName = "hello" >> def someMethod(self): >> self.sumName = "bye"
>> find that bug. Aside from the other responses (unittests, pychecker/pylint), you might also consider using __slots__ for new-style classes: class x(object): __slots__ = ('someName',) def __init__(self): self.someName = "hello" def someMethod(self): self.sumName = "bye" my_x = x() my_x.someMethod() When run you will get this output: Traceback (most recent call last): File "slot.py", line 9, in <module> my_x.someMethod() File "slot.py", line 6, in someMethod self.sumName = "bye" AttributeError: 'x' object has no attribute 'sumName' Skip -- http://mail.python.org/mailman/listinfo/python-list