python数字滚动效果怎么实现

import tkinter as tk

class NumberRollingApp:
def __init__(self, root):
self.root = root
self.number = 0
self.label = tk.Label(root, text=str(self.number), font=("Arial", 24))
self.label.pack()
self.roll_number()

def roll_number(self):
self.number += 1
if self.number > 9:
self.number = 0
self.label.config(text=str(self.number))
self.root.after(1000, self.roll_number)

if __name__ == "__main__":
root = tk.Tk()
app = NumberRollingApp(root)
root.mainloop()