New submission from Serhiy Storchaka <storchaka+cpyt...@gmail.com>: The proposed PR optimizes "from ... import ..." from non-package modules.
$ ./python -m perf timeit 'from locale import getlocale' Unpatched: Mean +- std dev: 811 ns +- 27 ns Patched: Mean +- std dev: 624 ns +- 17 ns Currently _bootstrap._handle_fromlist() is called which does nothing if the module is not a package, but adds an overhead of calling a Python function. The PR moves this check out of _handle_fromlist and avoid calling it if not needed. ---------- components: Interpreter Core messages: 312781 nosy: brett.cannon, eric.snow, ncoghlan, serhiy.storchaka priority: normal severity: normal status: open title: Speed up import from non-packages type: performance versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32946> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
