Steven Bethard <steven.beth...@gmail.com> added the comment: The whole point was to have a function (or class) that accumulates a sequence and counts it. collections.defaultdict(lambda: 0) doesn't achieve this on its own because it only knows how to handle sequences of (key, value):
>>> d = collections.defaultdict(lambda: 0) >>> d.update('aaabbac') Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: dictionary update sequence element #0 has length 1; 2 is required The feature request here was mainly a request to provide an abbreviation of a very common 4-line function. _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue1696199> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com