[Question] Why unusual usage of self function binding?

[msseibel]

Not important, I am just curious about your code style in the Deepjdot class.

Why do you assign functions to the class with the following structure:

class Deepjdot(object):
    ....
    def foo(baz):
         do_sth(baz)
    self.foo = foo

Instead of:

class Deepjdot(object):
    ....
    def foo(self, baz):
         do_sth(baz)

Has your implementation any advantages?