[Python-Dev] 2.5 slower than 2.4 for some things?

Greg Ewing greg.ewing at canterbury.ac.nz
Tue Jun 12 10:01:09 CEST 2007

I've had a report from a user that Plex runs about half
as fast in 2.5 as it did in 2.4. In particular, the
NFA-to-DFA conversion phase, which does a lot of
messing about with dicts representing mappings between
sets of states.

Does anyone in the Ministry for Making Python Blazingly
fast happen to know of some change that might have
pessimised things in this area?

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