Tkinter

from Tkinter import *
root = Tk()

v = IntVar()

Radiobutton(root, text="One", variable=v, value=1).pack(anchor=W)
Radiobutton(root, text="Two", variable=v, value=2).pack(anchor=W)
Radiobutton(root, text="Three", variable=v, value=3).pack(anchor=W)

l = Label(root,textvariable=v)
l.pack()
mainloop()

from Tkinter import *

master = Tk()

LANGS = [
    ("Python", 1),
    ("Perl", 2),
    ("Ruby", 3),
    ("Lua", 4)]

v = IntVar()
v.set(1)
for lang, num in LANGS:
    b = Radiobutton(master, text=lang, variable=v, value=num, indicatoron=False)
    b.pack(fill=X)

mainloop()