15 Exercises to Know A Programming Language

Martin martin.clausen at gmail.com
Tue Jul 3 11:58:16 CEST 2007

I am trying to improve my Python skills through some exercises.
Currently I am working on Larry's "15 exercises to know a programming
language " (http://www.knowing.net/
PermaLink,guid,f3b9ba36-848e-43f8-9caa-232ec216192d.aspx). The first
exercise is this:

"Write a program that takes as its first argument one of the words
'sum,' 'product,' 'mean,' or 'sqrt'  and for further arguments a
series of numbers. The program applies the appropriate function to
the series."

My solution so far is this:


I would really like some feedback. Is this a good solution? is it
efficient? robust? what could be improved? any not looking for a
revised solution, hints on what to improve are also very welcome.


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