1 # -*- coding: UTF-8 -*-
 2 from tkinter import *
 3 
 4 class MainPages:
 5     def __init__(self,master):
 6         self.root = master
 7         self.root.geometry("600x600")
 8         self.fm = ''
 9         self.menuBtn()
10     
11     def menuBtn(self):
12         btn1 = Button(self.root,text="
 
change",width=10,height=2, command=lambda:self.change1())
13         btn1.place(x=0,y=0)
14         btn2 = Button(self.root,text="change2",width=10,height=2,command=lambda:self.change2())
15         btn2.place(x=90,y=0)
16         btn3 = Button(self.root,text="change3",width=10,height=2,command=lambda:self.change3())
 
17         btn3.place(x=180,y=0)
18         self.face1()
19     
20     def face1(self):
21         self.fm = Frame(self.root,width=300,height=300,bg="skyblue")
22         self.fm.place(x=0,y=50)
23         lbl = Label(self.fm,text="page1")
24         lbl.place(x=0,y=100)
25         
26     def face2(self):
27         self.fm = Frame(self.root,width=200,height=200,bg="
 
pink")
28         self.fm.place(x=0,y=50)
29         lbl = Label(self.fm,text="page2")
30         lbl.place(x=0,y=100)
31         
32     def face3(self):
33         self.fm = Frame(self.root,width=150,height=150,bg="orange")
34         self.fm.place(x=0,y=50)
35         lbl = Label(self.fm,text="page3")
36         lbl.place(x=0,y=100)
37         
38     def change1(self):
39         self.fm.destroy()
40         self.face1()
41     
42     def change2(self):
43         self.fm.destroy()
44         self.face2()
45     
46     def change3(self):
47         self.fm.destroy()
48         self.face3()
49 
50 if __name__ == "__main__":
51     root = Tk()
52     MainPages(root)
53     root.mainloop()