Can bin() be overloaded like oct() and hex() in Python 2.6?

Question

In Python 2.6 (and earlier) the hex() and oct() built-in functions can be overloaded in a class by defining __hex__ and __oct__

Answer 1

The bin function receives it's value from the object's __index__ function. So for an object, you can define the value converted to binary, but you can't define the format of the string.