Senthil Kumaran added the comment: Tim Peters added the comment:
> ..., _fast=slow, ... > > in an argument list means we endure the slow lookup (of `slow`) only > once, when the function is first defined. When the function is > _called_, that binding is available via the local (much faster lookup) > variable `_fast`. > > Purely a speed trick, but can make a real difference in very heavily > used functions. Thanks for the answer, Tim. Interesting optimization. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue14927> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
