New submission from Clemens <cwestp...@gams.com>:
Function isspace() is significantly slower in extension modules in Python 3.7 or later than in Python 3.6 on Windows 10. Python 3.6: >python test.py Locale: C Set locale: C Locale: C Duration: 0.19718074798583984 Python 3.7: >python test.py Locale: C Set locale: C Locale: C Duration: 2.9086477756500244 Python 3.8: >python test.py Locale: LC_COLLATE=C;LC_CTYPE=English_Germany.1252;LC_MONETARY=C;LC_NUMERIC=C;LC_TIME=C Set locale: C Locale: C Duration: 2.99224853515625 Python 3.9.0a5: >python test.py Locale: LC_COLLATE=C;LC_CTYPE=English_Germany.1252;LC_MONETARY=C;LC_NUMERIC=C;LC_TIME=C Set locale: C Locale: C Duration: 2.90370512008667 Building the extension module: > python setup.py build_ext A similar issue already exists, but I am not sure if it is the same problem since the suggested solution is about embedding Python rather then extending it: https://bugs.python.org/issue35195 ---------- components: Distutils, Windows messages: 375722 nosy: Clemens, dstufft, eric.araujo, paul.moore, steve.dower, tim.golden, zach.ware priority: normal severity: normal status: open title: Performance issue using isspace() in extension module on Windows type: performance versions: Python 3.7, Python 3.8, Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue41601> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
