(self)
| 54 | self.out_var.set(current) |
| 55 | |
| 56 | def press_9(self): |
| 57 | current = self.out_var.get() |
| 58 | if current == "": |
| 59 | self.out_var.set(9) |
| 60 | else: |
| 61 | current += str(9) |
| 62 | self.out_var.set(current) |
| 63 | |
| 64 | def press_4(self): |
| 65 | current = self.out_var.get() |