How to move between windows?

Question

I’m creating a simple system just to learn a little bit about the Tkinter library. However, I stopped right here.

The idea is to create several pages in the same code (I know that the correct one would modularize the code, but because it is a small project, everything together will serve). However, I would like to be able to press a button and thus travel from one page to another.

For example, I run the program and then I am shown Page 1.

When clicking the "Page 2" button, I should go to page 2. Where there should be a "Back" button that takes me back to Page 1.

And this process should take place with any page that I want to create. I want to ask for this help because all the codes I found were very confusing and/or did not work with separate pages where the button would call them.

Code:

from tkinter import *
import sys

janela1 = Tk()
b1 = Button(janela1, text="Janela 2")
b1.grid()
b2 = Button(janela1, text="Janela 3")
b2.grid()
janela1.geometry("200x100")
janela1.mainloop()

sys.exit()

janela2 = Tk()
b3 = Button(janela2, text="Voltar")
b3.grid()
janela2.geometry("200x100")
janela2.mainloop()

janela3 = Tk()
b4 = Button(janela3, text="Voltar")
b4.grid()
janela3.geometry("200x100")
janela3.mainloop()

Answer 1

For that there is the Tkinter.Frame and with the method pack to display the frame you want and using the pack_forget (can use the forget_grid if working with grids) to hide (remove), very simple example:

from tkinter import *

root = Tk()

frame1 = Frame(root)
frame2 = Frame(root)


def go_home():
    frame2.pack_forget()
    frame1.pack()


def go_second():
    frame1.pack_forget()
    frame2.pack()


root.title("páginas")

btn_page2 = Button(frame1, text="Página 2", command=go_second)
btn_page2.pack()

btn_home = Button(frame2, text="inicial", command=go_home)
btn_home.pack()

frame1.pack()

root.mainloop()

There is also the method raise which has the python equivalent as frame.tkraise(), which will change the order of the frames added to root, in which case both frames will always be there (in which case I have not found documented in Python, so I find I will try to produce an example).