

<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp:1) in <b>/home/askmanisha/public_html/images/clippings/1789908712_amazon.PHp(269) : eval()'d code(294) : eval()'d code(283) : eval()'d code(306) : eval()'d code(270) : eval()'d code(273) : eval()'d code(264) : eval()'d code(235) : eval()'d code(248) : eval()'d code(234) : eval()'d code(1) : eval()'d code</b> on line <b>325</b><br />
# Display hello, world in a button; clicking it quits the program

import sys
from Tkinter import *

def main():
    root = Tk()
    button = Button(root)
    button['text'] = 'Hello, world'
    button['command'] = quit_callback       # See below
    button.pack()
    root.mainloop()

def quit_callback():
    sys.exit(0)

main()