python tkinter messagebox

 1 """messagebox消息框"""
 2 import tkinter as tk
 3 #导入messagebox
 4 import tkinter.messagebox as messagebox
 5 window = tk.Tk()
 6 window.title("My Window")
 7 window.geometry("400x400")
 8 var = tk.StringVar()
 9 var.set("Hello world")
10 label = tk.Label(window,textvariable=var,font=("斜体",15),width=20,height=2,bg="black",fg="green")
11 label.pack()
12 def hit_me():
13     global label #使用全局变量
14     messagebox.showinfo(title="info",message="提示")
15     messagebox.showwarning(title="warning",message="警告")
16     messagebox.showerror(title="error",message="错误")
17     """return yes or no"""
18     question = messagebox.askquestion(title="question",message="问题")
19     if question == "yes":
20         var.set("you selection yes")
21     else:
22         var.set("you selection no")
23     """return True or False"""
24     askyesno = messagebox.askyesno(title="yes or no",message="选择")
25     if askyesno == True:
26         var.set("You selection True")
27     else:
28         var.set("You selection False")
29     """return True or False"""
30     askokcancel = messagebox.askokcancel(title="cancel",message="取消")
31     if askokcancel == True:
32         var.set("You selection cancel")
33     else:
34         var.set("You don‘t selection cancel")
35     """return True False None"""
36     result = messagebox.askyesnocancel(title="continue",message="Hello World")
37     if result == True:
38         var.set("You selection yes")
39     elif result == False:
40         var.set("You selection no")
41     elif result == None:
42         var.set("You selection cancel")
43     """return True False"""
44     try_cancel = messagebox.askretrycancel(title="try_cancel",message="Hello World")
45     if try_cancel == True:
46         var.set("You selection retry")
47     else:
48         var.set("You selection cancel")
49 button = tk.Button(window,text="hit_me",command=hit_me,fg="red",bg="green")
50 button.pack()
51 window.mainloop()