Introduction

Explains how to display multiple Window screens in Tkinter.

result

Tkinter classification template Was used. Follow the steps below to assemble the cord.

Prepare the Win1 class for Window 1.
Prepare the Win2 class for Window 2.
Define the behavior to open Windows 2 in the Call back function (action when pressing Button) of Win1 class.

Programming code

import tkinter as tk
from tkinter import ttk

class Win1(tk.Frame):
    def __init__(self,master):
        super().__init__(master)
        self.pack()

        self.master.geometry("400x400")
        self.master.title("window 1")
        self.create_widgets()

    def create_widgets(self):
        # Button
        self.button_new_win = ttk.Button(self)
        self.button_new_win.configure(text="Open Window 2")
        self.button_new_win.configure(command = self.new_window)
        self.button_new_win.pack()

    #Call back function
    def new_window(self):
        self.newWindow = tk.Toplevel(self.master)
        self.app = Win2(self.newWindow)



class Win2(tk.Frame):
    def __init__(self,master):

        super().__init__(master)
        self.pack()
        self.master.geometry("300x300")
        self.master.title("window 2")
        self.create_widgets()

    def create_widgets(self):
        # Button
        self.button_quit = ttk.Button(self)
        self.button_quit.configure(text="Close Window 2")
        self.button_quit.configure(command=self.quit_window)
        self.button_quit.pack()

    def quit_window(self):
        self.master.destroy()


def main():
    root = tk.Tk()
    app = Win1(master=root)#Inherit
    app.mainloop()

if __name__ == "__main__":
    main()

Reference material

[Python] Tkinter template

2.　Tkinter example code for multiple windows

[Python] Show multiple windows in Tkinter

Introduction

result

Programming code

Reference material