New submission from Antoine Pitrou: It can be useful to rotate an OrderedDict (for example when managing a circular playlist). I haven't found any efficient way to do so from user code, without poking at the internals.
Actually, I envision three methods: OrderedDict.rotate(self, n): rotate n steps to the right (similarly to deque.rotate()) OrderedDict.rotate_at(self, key): rotate so that the given key ends up in first position OrderedDict.rotate_after(self, key): rotate so that the given key ends up in last position (rotate_at, rotate_after could be merged in a single method with a "last" argument, if deemed more elegant) Note: another solution to the playlist problem would be to have insert_after() and insert_before() methods. ---------- messages: 181086 nosy: pitrou, rhettinger priority: normal severity: normal status: open title: rotating an ordereddict type: enhancement versions: Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17100> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
