Raymond Hettinger <[EMAIL PROTECTED]> added the comment: John, when y=[], the update method has to create a new list iterator on each invocation. But when y is a genexp, it is self-iterable (iow, iter (y) will return self, not a new object).
Also, when doing timings, it can be helpful to factor-out the attribute lookup: python -m timeit -s 'x=set(range(10000)); y=[]; xu=x.update' 'xu(y)' __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2672> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
