What is the most efficient way to compare similar contents in two lists?

[Chris Torek]

In article <mailman.188.1307988677.11593.python-list at python.org>
Chris Angelico  <rosuav at gmail.com> wrote:
>If order and duplicates matter, then you want a completely different
>diff. I wrote one a while back, but not in Python. ...

If order and duplicates matter, one might want to look into
difflib. :-)
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In-Real-Life: Chris Torek, Wind River Systems
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