Does Python have anonymous classes?

Question

I\'m wondering if Python has anything like the C# anonymous classes feature. To clarify, here\'s a sample C# snippet:

var foo = new { x = 1, y = 2 };
var bar          


        

Answer 1

The pythonic way would be to use a dict:

>>> foo = dict(x=1, y=2)
>>> bar = dict(y=2, x=1)
>>> foo == bar
True

Meets all your requirements except that you still have to do foo['x'] instead of foo.x.

If that's a problem, you could easily define a class such as:

class Bunch(object):
    def __init__(self, **kwds):
        self.__dict__.update(kwds)

    def __eq__(self, other):
        return self.__dict__ == other.__dict__

Or, a nice and short one

class Bunch(dict):
    __getattr__, __setattr__ = dict.get, dict.__setitem__

(but note that this second one has problems as Alex points out in his comment!)