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From: Peter Otten <__peter__@web.de>
Subject: Re: profiling and optimizing
Date: Tue, 31 Jul 2012 15:23:56 +0200
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Xref: csiph.com comp.lang.python:26307

Rita wrote:

> I recently inherented a large python process and everything is lovely. As
> a learning experience I would like to optimize the code so I ran it thru
> the profiler
> 
> python -m cProfile myscript.py
> 
> It seems majority of the time is taking in the deep copy but that seems to
> come from a function (or functions) in the code. Is there a way to
> optimize that? perhaps have a C implementation of the deep copy? Would
> that be feasible?

To give what the other respondents said a different angle: if you replace 
the deep with a shallow copy: do your unit tests start to fail? 

You don't have any? Add them before you start tinkering with the code ;)