Paul Rudin wrote:
> "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes:
> A common paradigm to get round this - assuming you want a different
> empty list each time - is something like:
>
> def __init__(self, v = None):
> self.values = v if v else []
>
> (or maybe test explicitly for None, but you get the idea.)
Do test explicitly for None. Otherwise, if you do
a = []
x = ThatClass (a)
it will so happen that x.values will be an empty list, but it won't be
the same list as a.
Mel.
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