Method __init__

examples/IPython Kernel/gui/gui-tk.py:16–21

(self, root)

class MyApp:

    def __init__(self, root):
        frame = Frame(root)
        frame.pack()

        self.button = Button(frame, text="Hello", command=self.hello_world)
        self.button.pack(side=LEFT)

    def hello_world(self):
        print("Hello World!")