+1 We'd like to get more details on how to try this "new mode", and do a full/comprehensive comparison between the "re" vs "regex". Peter -----Original Message----- From: Victor Stinner [mailto:victor.stinner at gmail.com] Sent: Wednesday, February 01, 2017 12:58 PM To: Lukasz Langa <lukasz at langa.pl> Cc: Wang, Peter Xihong <peter.xihong.wang at intel.com>; python-dev at python.org Subject: Re: [Python-Dev] re performance 2017-02-01 20:42 GMT+01:00 Lukasz Langa <lukasz at langa.pl>: > However, this benchmark is incomplete in the sense that it only checks > the compatibility mode of `regex`, whereas it's the new mode that > lends the biggest performance gains. So, providing checks for the > other engine would show us the full picture. Would you mind to write a pull request for performance to add a command line option to test "re" (stdlib) or "regex" (PyPI, in the new mode)? Or maybe even regex and regex_compatibility_mode :-) Source: https://github.com/python/performance/blob/master/performance/benchmarks/bm_regex_v8.py#L1789 Example of benchmark with cmdline options: https://github.com/python/performance/blob/master/performance/benchmarks/bm_raytrace.py#L385 Victor
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