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From: Steve Crook <steve@mixmin.net>
Newsgroups: comp.lang.python
Subject: Dictionaries and incrementing keys
Date: Tue, 14 Jun 2011 10:57:44 +0000 (UTC)
Organization: Mixmin
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Hi all,

I've always done key creation/incrementation using:

if key in dict:
    dict[key] += 1
else:
    dict[key] = 1

Today I spotted an alternative:

dict[key] = dict.get(key, 0) + 1

Whilst certainly more compact, I'd be interested in views on how
pythonesque this method is.