Dict whose items can also be accessed as attributes. This is the trivial implementation suggested by Martin Miller on StackExchange: http://code.activestate.com/recipes/576972-attrdict/ with my own doctests.

attrdict.py

class AttrDict(dict):
    """Dict whose items can also be accessed as attributes.

    This is the trivial implementation suggested by Martin Miller on
    StackExchange: http://code.activestate.com/recipes/576972-attrdict/

    >>> ad = AttrDict()

    Normal dict access:
    >>> ad['foo'] = 3
    >>> ad['foo']
    3

    But key 'foo' can also be accessed as an attribute:
    >>> ad.foo
    3

    You can set keys via attribute access too:
    >>> ad.bar = 4
    >>> ad.bar
    4

    And then access them as dictionary keys:
    >>> ad['bar']
    4
    >>> ad.bar
    4

    Key lookup failure results in a KeyError:
    >>> ad['baz']
    Traceback (most recent call last):
        ...
    KeyError: 'baz'

    While attribute lookup failure results in an AttributeError:
    >>> ad.baz
    Traceback (most recent call last):
        ...
    AttributeError: 'AttrDict' object has no attribute 'baz'
    """

    def __init__(self, *args, **kwargs):
        super(AttrDict, self).__init__(*args, **kwargs)
        self.__dict__ = self


if __name__ == '__main__':
    import doctest
    doctest.testmod()