On Mon, Dec 1, 2014 at 11:29 AM, Larry Martell <larry.mart...@gmail.com> wrote: > I spoke too soon: > >>>> class defaultdictkey(defaultdict): > ... def __missing__(self, key): > ... self[key] = self.default_factory(key) > ... >>>> x = defaultdictkey(lambda k: k) >>>> print x['aaa'] > None >>>> print x['aaa'] > aaa >>>> a = x['qqq'] >>>> print a > None
You need to also return the value from __missing__. -- https://mail.python.org/mailman/listinfo/python-list
