How is True < 2 implemented?
True is equal to 1 in Python (which is why it's less than 2) and bool is a subclass of int: basically, False and True are 0 and 1 with funky repr()s.
As to how comparison is implemented on integers, Python uses __cmp__(), which is the old-school way of writing comparisons in Python. (Python 3 doesn't support __cmp__(), which is why it's implemented as __lt__() there.) See https://docs.python.org/2/reference/datamodel.html#object.__cmp__
You didn't find super(bool, True).__lt__ because int uses the legacy __cmp__ method instead of rich comparisons on Python 2. It's int.__cmp__.
True is a just name that refers to an object of type int, specifically value 1. Expression True < 2 is equal to 1 < 2. Same, False is equal to 0. In Python 2 you have a method __cmp__, that returns 0 if values are equals, -1 if is one value too greater than other value and 1 if is one value too less than other value. Example:
>>> True.__cmp__(1)0>>> True.__cmp__(0)1>>> True.__cmp__(-1)1>>> True.__cmp__(0)1>>> True.__cmp__(1)0>>> True.__cmp__(2)-1In Python 3 you have a __lt__ and __gt__ methods that are equivalents of < and >.