Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment: The cause of len() been faster than bool() is the same as why repr() is faster than str(). [1] len() and repr() are functions that just call corresponding slots, while bool() and str() are constructors.
In most cases you shouldn't use `bool(obj)` or `len(obj) > 0`. Instead use just `obj` in conditions. If you can provide a patch that speeds up constructions of simple class instances, please open a pull request on GitHub. Otherwise this issue will be closed. [1] https://stackoverflow.com/questions/45376719/why-is-reprint-faster-than-strint ---------- nosy: +serhiy.storchaka status: open -> pending versions: +Python 3.7 -Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32180> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
