import tkinter as tk
root = tk.Tk()

def main_account_screen():
    main_screen = tk()
    main_screen.geometry("1920x1080") #set the configuration of GUI window
    main_screen.title("Account Login") #set the title of GUI window
#create a FORM label
    tk.Label(text="Choose login Or Register", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
    tk.Label(text="").pack()

#create a Login button
    tk.Button(text="Login", height="2", width="30").pack()
    tk.Label(text="").pack()

#create a register button 
    tk.Button(text="Register", height="2", width="30").pack()
  
    main_screen.mainloop() # start the GUI

    main_account_screen() # call the main_account_screen() function