mxml-barmstrong

In [1]: import index

In [2]: i = index.Multidex(unique_keys=('pk',), common_keys=('name',))

In [3]: class Person(object):
    def __init__(self, name):
        global last_pk
        self.pk = last_pk
        last_pk += 1
        self.name = name

mxml-barmstrong

class SliceDict(dict):
    def __getitem__(self, item):
        if isinstance(item, slice):
            return self.get(item.start, item.stop)
        return super(SliceDict, self).__getitem__(item)
        
>> d = SliceDict()
>> d['a'] = 1
>> d['a']
1