"Michele Simionato" <[EMAIL PROTECTED]> wrote: > FWIW, here is my take on the defaultdict approach: > > def defaultdict(defaultfactory, dictclass=dict): > class defdict(dictclass): > def __getitem__(self, key): > try: > return super(defdict, self).__getitem__(key) > except KeyError: > return self.setdefault(key, defaultfactory()) > return defdict > > d = defaultdict(int)() > d["x"] += 1 > d["x"] += 1 > d["y"] += 1 > print d > > d = defaultdict(list)() > d["x"].append(1) > d["x"].append(2) > d["y"].append(1) > print d > > Michele Simionato
Best solution so far. If it wasn't for the really bad decision to add the dict(**kwargs) constructor, I'd love to see something like d = dict(valType=int) d["x"] += 1 George -- http://mail.python.org/mailman/listinfo/python-list
