Create an anonymous class instance in python

Question

Sometimes i need to create an anonymous class instance in python, just like c#:

var o= new {attr1=\"somehing\", attr2=344};

but in python i

Answer 1

o = type('Dummy', (object,), { "attr1": "somehing", "attr2": 344 })

o.attr3 = "test"
print o.attr1, o.attr2, o.attr3