import tkinter as tk
root = tk.Tk()
v = tk.IntVar() v.set(1) # initializing the choice, i.e. Python
languages = [ ("Python",1), ("Perl",2), ("Java",3), ("C++",4), ("C",5) ]
def ShowChoice(): print(v.get())
tk.Label(root, text="""Choose your favourite programming language:""", justify = tk.LEFT, padx = 20).pack()
for val, language in enumerate(languages): tk.Radiobutton(root, text=language, padx = 20, variable=v, command=ShowChoice, value=val).pack(anchor=tk.W)
root.mainloop()