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Fri Apr 10 03:01:50 CEST 2009 · https://mail.python.org/pipermail/python-dev/2009-April/088557.html

2009/4/9 Greg Ewing <greg.ewing at canterbury.ac.nz>:
> John Arbash Meinel wrote:
>>
>> And when you look at the intern function, it doesn't use
>> setdefault logic, it actually does a get() followed by a set(), which
>> means the cost of interning is 1-2 lookups depending on likelyhood, etc.
>
> Keep in mind that intern() is called fairly rarely, mostly
> only at module load time. It may not be worth attempting
> to speed it up.

That's very important, though, for a command line tool for bazaar.
Even a few fractions of a second can make a difference in user
perception of speed.

-- 
Regards,
Benjamin

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[Python-Dev] Rethinking intern() and its data structure