Christopher Spears wrote: >>class MyList: >> def __init__(self, aList=None): >> if aList is None: >> self._list = [] >> else: >> self._list = aList[:] >> > > > This code certainly looks like it will do the trick. > I'm just not sure what the _ in front of list (i.e. > _list) denotes.
It's a convention that indicates a private attribute. Think of it as telling clients, "This is for my private use, it may change at any time." In this case it was also a way to avoid using 'list' as the name of the attribute. 'list' is the name of a built-in - it shouldn't be used as a variable name because it will shadow the built-in. In the case of an attribute it doesn't really matter but I have a strong habit of not using 'list' as a name. Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
