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Date: Sun, 05 Aug 2012 16:03:50 -0500
From: Tim Chase <python.list@tim.thechases.com>
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To: John Mordecai Dildy <jdildy85@gmail.com>
Subject: Re: Intermediate Python user needed help
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On 08/05/12 15:52, John Mordecai Dildy wrote:
> Current Problem at the moment
> 
> Traceback (most recent call last):
>   File "ex26.py", line 66, in <module>
>     beans, jars, crates = secret_formula(start-point)
> NameError: name 'start' is not defined
> 
> anyone know how to make start defined

"start-point" is not a valid identifier as the "-" isn't permitted
in a variable name.  This is the case for just about every language
out there.  HTML/XML & CSS are the only languages that come to my
mind in which the dash is considered a valid part of an identifier.

You either mean something like "start_point" (with an underscore
instead of a minus), or you're performing a subtraction of "start
minus point", in which case you'd have to assign those values before
you use them.

-tkc