import tkinter

root = tkinter.Tk()

button1 = tkinter.Button(root, text="Hello!")
button1.pack()

w = tkinter.Scale(root, from_=0, to=100)
w.pack()

listbox = tkinter.Listbox(root)
listbox.pack()
listbox.insert(tkinter.END, "GUI")
listbox.insert(tkinter.END, "IS")
listbox.insert(tkinter.END, "FUN!")

root.mainloop()
print("main loop ended. We are exiting.")