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Fri Feb 17 23:00:36 CET 2006 · https://mail.python.org/pipermail/python-dev/2006-February/061283.html

Fuzzyman wrote:
>>Also, I think has_key/in should return True if there is a default.
>>
>>  
>>
> And exactly what use would it then be ?

Code that checks

if d.has_key(k):
  print d[k]

would work correctly. IOW, you could use a dictionary with a default
key just as if it were a normal dictionary - which is a useful
property, IMO.

Regards,
Martin

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[Python-Dev] Proposal: defaultdict