STINNER Victor added the comment: Raymond Hettinger added the comment: > Some parts of the patch are harmless but other parts needlessly constipates > the code for very little benefit.
In general, Python startup is currently the most severe performance regression in Python 3 compared to Python 2.7: https://speed.python.org/comparison/?exe=12%2BL%2Bmaster%2C12%2BL%2B3.5%2C12%2BL%2B3.6%2C12%2BL%2B2.7&ben=649&env=1&hor=true&bas=12%2BL%2B2.7&chart=normal+bars Python 3.7 is the fastest of Python 3 versions, but Python 3.7 still more than 2.2x slower than Python 2.7. 2.2x is a large number, it's not a tiny slowdown. I agree with Serhiy that argparse became more popular so became more important for Python startup time in applications. Maybe Serhiy can try to run a benchmark for get timing (milliseconds) instead of comparing the number of imports? Sorry, I didn't have time to review the change itself yet. But I like efforts to optimize Python startup time in general. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30152> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
