Function pointers up to delegates

function_pointer_delegates.py

# some button class somewhere that you didn't write.

class Button():
    
    def __init__(self,functionToExecuteOnClick):
        self.clickFunction = functionToExecuteOnClick
        # does a bunch of other cool stuff to display button - you were too slack to write this code, that's why you're using their button in the first place.

    # pretend this is private.  other classes shouldn't be calling this method
    def buttonClicked():
        self.clickFunction(self.name)


# now off in your own code

def myClickFunction():
    print "someone clicked the button!"

myButton = Button(myClickFunction)

# after some time.... someone clicks the button.

# it displays "someone clicked the button!"