Martin v. Löwis <mar...@v.loewis.de> added the comment: Terry J. Reedy wrote: > Terry J. Reedy <tjre...@udel.edu> added the comment: > > Martin, I agree that we would have to think carefully about all > attributes of all constants loaded by LOAD_CONST, and about > special-casing marshal, but given that "'str' object attribute 'join' is > read-only", how is ''.join not a constant?
py> s = "" py> s.join is s.join False Every time you read it, you get a new object. Not what I would call a constant. If you don't see how this matters, try def foo(): return "".join print foo() is foo() with and without your patch. ---------- title: LOAD_CONST followed by LOAD_ATTR can be optimized to just be a LOAD_COST -> LOAD_CONST followed by LOAD_ATTR can be optimized to just be a LOAD_COST _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6133> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
