Jeff Shannon <[EMAIL PROTECTED]> writes:
> Sion Arrowsmith wrote:
> Additionally, as I understand it UserList and UserDict are implemented
> entirely in Python, which means that there can be significant
> performance differences as well.
Actually, UserList and UserDict are just wrappers around the builtin
types. So the performance hit is one Python function call - pretty
much neglible. But new code should still subclass the builtins.
<mike
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