Cool dict

gistfile1.txt

>>> class CoolDict(dict):
...     def __getattr__(self, attr):
...         return self[attr]
...
>>> c = CoolDict()
>>> c['a']
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyError: 'a'
>>> c['a'] = 3
>>> c['a']
3
>>> c.a
3
>>> CoolDict(a=3, b=3)
{'a': 3, 'b': 3}
>>> _.a
3