New submission from seesee <cthe...@gmail.com>: It seems python 2.6.2 (at least under Windows, I have not tested other platforms) does break the len function on the reversed iterator:
Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> len(reversed([1,2,3])) 3 Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> len(reversed([1,2,3])) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: object of type 'listreverseiterator' has no len() I don't think it was meant to work but it did in Python 2.6.1 (and 2.5 as shown above). I guess it has something to do with Issue #3689 and guess __len__ was simply removed. Problem really is that Python 2.6.2 breaks backwards compatibility. ---------- components: Windows messages: 86122 nosy: seesee severity: normal status: open title: len(reversed([1,2,3])) does not work anymore in 2.6.2 versions: Python 2.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5786> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
