Cheryl Sabella <chek...@gmail.com> added the comment:
For msg312474 regarding replace vs re.
Running the 20,000 copy version of the translated text (only translating once
gives the following timings:
copies: 20000 translate time: 5.591020822525024
copies: 20000 translate time: 5.5614333152771
copies: 20000 translate time: 5.561311483383179
copies: 20000 translate time: 5.558183670043945
copies: 20000 translate time: 5.580726385116577
copies: 20000 translate time: 5.588990688323975
copies: 20000 translate time: 5.570690155029297
copies: 20000 translate time: 5.601408004760742
copies: 20000 translate time: 5.76714825630188
copies: 20000 translate time: 5.697475910186768
And the re version gives:
copies: 20000 translate time: 5.935032844543457
copies: 20000 translate time: 5.939348220825195
copies: 20000 translate time: 5.933218240737915
copies: 20000 translate time: 6.070481538772583
copies: 20000 translate time: 6.319685935974121
copies: 20000 translate time: 6.4209065437316895
copies: 20000 translate time: 6.476579666137695
copies: 20000 translate time: 6.520790100097656
copies: 20000 translate time: 6.541554927825928
copies: 20000 translate time: 6.620612859725952
So, it's a little slower on a big string. It also gives slightly different
results because of the last replace:
code.replace('\nx', '\n') isn't in the re.
On a more practical size document, they are about the same:
replace:
copies: 20 translate time: 0.0058782100677490234
copies: 20 translate time: 0.006024599075317383
copies: 20 translate time: 0.0056345462799072266
copies: 20 translate time: 0.005848884582519531
copies: 20 translate time: 0.005696296691894531
copies: 20 translate time: 0.00574946403503418
copies: 20 translate time: 0.005642890930175781
copies: 20 translate time: 0.005755901336669922
copies: 20 translate time: 0.0058023929595947266
copies: 20 translate time: 0.005713939666748047
re:
copies: 20 translate time: 0.005833148956298828
copies: 20 translate time: 0.005682229995727539
copies: 20 translate time: 0.00565028190612793
copies: 20 translate time: 0.005823850631713867
copies: 20 translate time: 0.0057680606842041016
copies: 20 translate time: 0.0058100223541259766
copies: 20 translate time: 0.005717277526855469
copies: 20 translate time: 0.005885601043701172
copies: 20 translate time: 0.005852460861206055
copies: 20 translate time: 0.005867958068847656
It appears the time for the replace is linear and the re is just a little more
than linear. Maybe it's just my computer.
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<https://bugs.python.org/issue32880>
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