Tkinter - Open one window and close another

Question

I want to have a login screen and when the login is successful, the screen is closed and a new screen is created. The problem is , when I do just like the following code , b

Answer 1

Slayer , I did like you said and it worked like a charm! Here is the example code:

from tkinter import *

class Tela_login(Frame):
    def __init__(self,master):
        Frame.__init__(self, master)
        self.grid()
        self.button1 = Button(text = "Open",command = lambda: self.open_login())
        self.button1.grid()

    def open_login(self):
        root2 = Toplevel()
        app2 = Tela_principal(root2)

class Tela_principal(Frame):
    def __init__(self,master):
        Frame.__init__(self, master)
        self.grid

root = Tk()
root.geometry("800x600")
app = Tela_login(root)
root.mainloop()