import tkinter as tk
import tkinter.ttk as ttk
import tkinter.messagebox as mb


def quit_school():
    mb.showinfo("退学通知", "滴！你被退学了！")


root = tk.Tk(className="你 要 挂 科 了")
root.geometry("400x200")
l = ttk.Label(root, text="可爱的小小小梦蕾要~挂~科~了~！", font=("微软雅黑", 14))
l.place(x=30, y=30, width=340)

by = ttk.Button(root, text="是的", command=quit_school)
by.place(x=160, y=140, width=100, height=40)
bn = ttk.Button(root, text="不是")
bn.place(x=280, y=140, width=100, height=40)

state = 0


def exchange():
    if state == 0:
        by.place(x=280, y=140, width=100, height=40)
        bn.place(x=160, y=140, width=100, height=40)
    else:
        by.place(x=160, y=140, width=100, height=40)
        bn.place(x=280, y=140, width=100, height=40)


def vertical_move():
    if state == 2:
        bn.place(x=280, y=100, width=100, height=40)
    else:
        bn.place(x=280, y=140, width=100, height=40)


def on_hover(_):
    global state
    if state in [0, 1]:
        exchange()
    else:
        vertical_move()
    state = (state + 1) % 4


def on_closing():
    mb.showinfo("提示", "关闭窗口也改变不了你挂科的事实！")
    root.destroy()


bn.bind("<Enter>", on_hover)
root.protocol("WM_DELETE_WINDOW", on_closing)

root.mainloop()