import tkinter as tk
root = tk.Tk()
root.attributes('-fullscreen',True)
import tkinter as tk
root = tk.Tk()
root.overrideredirect(True)
root.overrideredirect(False)
root.attributes('-fullscreen',True)
root.title("FullScreen")
label = tk.Label(root, text="Hello!")
label.pack()
root.mainloop()
import tkinter as tk
root = tk.Tk()
root.overrideredirect(True)
root.overrideredirect(False)
root.attributes('-fullscreen',True)