from Tkinter import *
def filemenu():
filewin = Toplevel(root)
fileclose = Button(filewin, text="Close Application")
fileclose.config(command=root.quit)
fileclose.pack()
root = Tk()
menubar = Menu(root)
menubar.add_command(label="File", command=filemenu)
menubar.add_command(label="Help")
root.config(menu=menubar)
root.mainloop()
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