The trick is that you have to add the function to the class not the instance to see how, run your interpreter and write these:
class test: def __init__(self): self.yes = "Hello Python!" def a(self): print self.yes t = test() t.b = a t.b()
When this runs, you get:
Traceback (most recent call last):
File “
t.b()
TypeError: b() takes exactly 1 argument (0 given)
To fix this, you will have to assign the function a to the class itself (test) not the instance (t) like:
test.b = a t = test() t.b()
Python is fun 
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