diff 0.4.1

You diff objects, you find out why they ain't the same.

diff defines a difference protocol. Watch:

>>> class LonelyObject(object):
...     def __diff__(self, other):
...         return "{} is not like {}".format(self, other)
...
...     def __repr__(self):
...         return "<LonelyObject>"

>>> from diff import diff
>>> diff(LonelyObject(), 12).explain()
'<LonelyObject> is not like 12'