[Python-Dev] Make re.compile faster (original) (raw)

Victor Stinner victor.stinner at gmail.com
Tue Oct 3 05🔞59 EDT 2017


* RegexFlag.and and new is called very often.

Yeah, when the re module was modified to use enums for flags, re.compile() became slower: https://pyperformance.readthedocs.io/cpython_results_2017.html#slowdown

https://speed.python.org/timeline/#/?exe=12&ben=regex_compile&env=1&revs=200&equid=off&quarts=on&extr=on

It would be nice if internally we could use integers again to reduce this overhead, without loosing the nice representation:

re.I <RegexFlag.IGNORECASE: 2>

Victor



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