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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: How can I speed up a script that iterates over a large range (600 billion)?
Date: Tue, 21 Jun 2011 19:30:01 -0400
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:8143

On 6/21/2011 3:48 PM, John Salerno wrote:

> Absolutely not! Each problem has been designed according to a "one-
> minute rule", which means that although it may take several hours to
> design a successful algorithm with more difficult problems, an
> efficient implementation will allow a solution to be obtained on a
> modestly powered computer in less than one minute."

That statement is for C, not Python. Python is efficient with human 
time, but not machine time. If something really takes a minute in C, 
allow yourself at least 10 minutes or even more with plain CPython.

-- 
Terry Jan Reedy