Python add to a function dynamically

Question

how do i add code to an existing function, either before or after?

for example, i have a class:

 class A(object):
     def test(self):
         print         


        

Answer 1

There are a lot of really good suggestions above, but one I didn't see was passing in a function with the call. Might look something like this:

class A(object):
    def test(self, deep=lambda self: self):
        print "here"
        deep(self)
def test2(self):
    print "and here"

Using this:

>>> a = A()
>>> a.test()
here
>>> a.test(test2)
here
and here