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Author serhiy.storchaka
Recipients georg.brandl, larry, martin.panter, python-dev, rhettinger, serhiy.storchaka, taleinat
Date 2017-01-20.18:04:07
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1484935447.63.0.359499619291.issue20186@psf.upfronthosting.co.za>
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Content 
Microbenchmarks:

$ ./python -m perf timeit --duplicate 100 "enumerate('abc')"
Unpatched:  Median +- std dev: 1.76 us +- 0.10 us
Patched:    Median +- std dev: 1.61 us +- 0.07 us

$ ./python -m perf timeit --duplicate 100 "enumerate('abc', 1)"
Unpatched:  Median +- std dev: 2.14 us +- 0.09 us
Patched:    Median +- std dev: 1.76 us +- 0.07 us

$ ./python -m perf timeit --duplicate 100 "reversed('abc')"
Unpatched:  Median +- std dev: 1.20 us +- 0.06 us
Patched:    Median +- std dev: 1.20 us +- 0.07 us

enumerate() is 9-21% faster (due to avoiding of tuple creating), reversed() is not changed (Argument Clinic generates the same parsing code for it).
History
Date User Action Args
2017-01-20 18:04:07serhiy.storchakasetrecipients: + serhiy.storchaka, georg.brandl, rhettinger, taleinat, larry, python-dev, martin.panter
2017-01-20 18:04:07serhiy.storchakasetmessageid: <1484935447.63.0.359499619291.issue20186@psf.upfronthosting.co.za>
2017-01-20 18:04:07serhiy.storchakalinkissue20186 messages
2017-01-20 18:04:07serhiy.storchakacreate