Matthew Barnett <pyt...@mrabarnett.plus.com> added the comment:
As a crude guide of the speed difference, here's Python 2.6:
re regex
bm_regex_compile.py 86.53secs 260.19secs
bm_regex_effbot.py 13.70secs 8.94secs
bm_regex_v8.py 15.66secs 9.09secs
Note that compiling regexes is a lot slower. I concentrated my efforts on the
matching speed because regexes tend to be compiled only once, so it's not as
important.
Matching speed should _at worst_ be comparable.
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<http://bugs.python.org/issue2636>
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