import tkinter

root = tkinter.Tk()

def do_quit():
    root.destroy()

root.title("Tkinter Welcome GUI")

label = tkinter.Label(root, text="Welcome to Tkinter", background="yellow",
                      anchor=tkinter.SE, font=("Helvetica", "24", "bold italic"),
                      padx=10, pady=10)

label.pack(side=tkinter.LEFT, fill=tkinter.BOTH, expand=True)

close_button = tkinter.Button(root, text="Close", command=do_quit)
close_button.pack(side=tkinter.RIGHT)

tkinter.mainloop() 
