Newbie elementary question

[rainer2207 at my-deja.com]

Can someone please explain what "self" and
"master" are?

eg.
At the moment I have

class Interface:
      def __init__(self, master):
            ....
            ....

root = Tk()
inter = Interface(root)
root.mainloop()

I'm assuming that master is the root window and
self is the instance name of the window in the
class. But I've also seen master=None. Can
someone please explain this?



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