Python, Tkinter, Checkbutton: Is there a way to check on/off value
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what i am trying to do is setup if statements to check if a checkbuttons value is on or off

what i was thinking was something like this

    from Tkinter import *

    def checkbutton_value():
    	#If statement here
    	#is their something like 
    	
    	#if checkbox_1.onvalue == True:
    	#	checkbox_2.deselect()
    	
    	#if checkbox_1.varible == checkbox_1.onvalue:
    	#	checkbox_2.deselect()
    	
    	print 'Need Help on lines 7-8 or 10-11'
    
    root=Tk()

    checkbox_1 = Checkbutton(root, text='1   ', command=checkbutton_value).pack()
    checkbox_2 = Checkbutton(root, text='2   ', command=checkbutton_value).pack()

    checkbox_3 = Checkbutton(root, text='QUIT', command=quit).pack()

    root.mainloop()
