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from tkinter import *
from tkinter import ttk
root = Tk()
frm = ttk.Frame(root, padding=30)
frm.grid()
ttk.Label(frm, text="Hello World!").grid(column=0, row=0)
ttk.Button(frm, text="Exit", command=root.destroy).grid(column=3, row=3)
root.mainloop()