[Tutor] Super In tkinter class inheritance

[George Nyoro]

I was observing the tkinter code under the topic "Creating arbitrary
number of destinations. (GUI program)" in the previous email and saw
this super thing:
> class ChooseDestinationWindow(Frame): def __init__(self,master):
>super(ChooseDestinationWindow,self).__init_
_(master)

What exactly does this super method since I have seen it numerous
times before and as far as I can see it is not anything the user
created himself in the class?