"Extracting" a dictionary

[Noldoaran]

Peter Otten:
> Saying self.__d = dont_care invokes __setattr__() to set __d, __setattr__()
> asks __getattr__() for __d, which asks __getattr__() for __d to determine
> __d ...ad infinitum.
> To avoid the recursion you must bypass __setattr__() by accessing __dict__
> directly.

(snip)

> While this works, you can achieve the same functionality in a more elegant
> way:
> 
> >>> class AttrDict:
> ...     def __init__(self, d):
> ...             self.__dict__.update(d)
> ...
(snip)
> A standard trick, by the way. Can't think of the right google keywords right
> now, so I use another standard trick and leave finding them as an excercise
> to the reader :-)
> 
> Peter

Thanks, Peter. I found another way that also works:

>>> class AttrDict(dict):
...     __getattr__ = dict.__getitem__
...     __getattribute__ = __getattr__
...     __setattr__ = dict.__setitem__
...     __delattr__ = dict.__delitem__
...     
>>> d = AttrDict({'foo': 23, 'bar': 42})
>>> d.foo
23
>>> d.bar
42
>>> d.spam = 123
>>> d.spam
123
>>> d
{'spam': 123, 'foo': 23, 'bar': 42}

----
~Noldoaran