Calculating Elapsed Time

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    Jean> I'm using an old version of python (2.1) and datetime isn't
    Jean> available until Python 2.3.  I can't upgrade my python.

There's a reference implementation of datetime written in Python:

    http://svn.python.org/view/sandbox/trunk/datetime/

It may or may not work in 2.1.  If you decide you can live without datetime,
Fredrik's strptime/mktime solution is how you do it without datetime.

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