Attribute accessable dictionary for Python

attrdict.py

class Attrdict(dict):
    """Attribute accessible dictionary class
    
    Usage:
        >>> attrdict = Attrdict(alice='in the wonderland')
        >>> attrdict.alice
        'in the wonderland'
        >>> attrdict['hello'] = 'world'
        >>> attrdict['hello']
        'world'
        >>> attrdict.hello
        'world'
        >>> attrdict.hello = 'madam'
        >>> attrdict.hello
        'madam'
        >>> attrdict.foobar = 'hogehoge'
        >>> attrdict.foobar
        'hogehoge'

    Reference:
        http://code.activestate.com/recipes/389916-example-setattr-getattr-overloading/
    """
    def __getattr__(self, key):
        try:
            return self.__getitem__(key)
        except KeyError:
            raise AttributeError(key)
    def __setattr__(self, key, value):
        if key in self:
            super(Attrdict, self).__setattr__(key, value)
        else:
            self.__setitem__(key, value)