| 12 | |
| 13 | |
| 14 | class MyApp: |
| 15 | |
| 16 | def __init__(self, root): |
| 17 | frame = Frame(root) |
| 18 | frame.pack() |
| 19 | |
| 20 | self.button = Button(frame, text="Hello", command=self.hello_world) |
| 21 | self.button.pack(side=LEFT) |
| 22 | |
| 23 | def hello_world(self): |
| 24 | print("Hello World!") |
| 25 | |
| 26 | root = Tk() |
| 27 |