代码

import tkinter as tk
n = 0
def move(b):
  def m():
    global n
    n += 1
    b.place(x=n)
    b.after(10, m)
  m()
root = tk.Tk()
b=tk.Button(bg='red')
b.place(x=0,y=10,width=10,height=10)
move(b)
root.mainloop()

挑战

走到最右端，再出现在左边，接着从左到右