# Tk_radio_btn_demo.py

# Tk_radio_btn_demo.py

from Tkinter import *

cb_strings = ['item 1', 'item 2', 'item 3', 'item 4']

def sel():
   print "You selected the option " + str(var.get())

root = Tk()
var = StringVar()
var.set(cb_strings[0])

for item in cb_strings:
    button = Radiobutton(root, text=item, variable=var, value=item, command=sel)
    button.pack(anchor=W)

root.mainloop()