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Date: Fri, 3 Jan 2014 10:19:09 -0500
Subject: Creating a list with holes
From: Larry Martell <larry.martell@gmail.com>
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Xref: csiph.com comp.lang.python:63058

I think I know the answer is no, but is there any package that allows
creating a list with holes in it? E.g. I'd want to do something like:

x[10] = 12
x[20] = 30

I'm thinking of something like defaultdict but for lists (I know
that's very different, but ... )

Thanks!
-larry