# class to represent JavaScript behavour, based on dict
class Jso(dict):
    # Obj. & Obj[] are the same thing in JavaScript
    def __getitem__(self, key):
        return dict.get(self, key)
    __getattribute__ = __getitem__

    __setattr__ = dict.__setitem__

    __delattr__ = dict.__delitem__

j = Jso()
j.a = 'a'
j['b'] = 'b'
print j