Scratch that, I'm a dork:
OrderDict[(o[0])] = OrderDict.get(o[0],0) + float(o[1])
http://www.faqts.com/knowledge_base/view.phtml/aid/4571/fid/541
:D
From: Rilindo Foster <[EMAIL PROTECTED]>
Date: September 13, 2008 3:53:34 PM EDT
To: Tutor@python.org
Subject: Addition, Dictionary, KeysError
Another silly question (if you were to call it a question)
Pulling the list of Store Orders and Sales and I am attempting to
accumulate the total amount of sales per Store.
In Perl, if I were to iterate through a hash, I can easily add the
values and populate the hash with:
TotalSales{Store} = TotalSales{Store} + Sales
In Python, it won't let me do that. If I were to do what I have done
in Perl:
OrderDict[o[0]] = float(OrderDict[o[0]]) + float(o[1])
I kept getting a "KeyError".
Am I doing this right? For some reason, I think I know the answer,
but I can't put my finger on it.
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