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

Benjamin Peterson benjamin at python.org
Fri Apr 10 03:01:50 CEST 2009

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.


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