Tkinter refresh

[woooee]

What do yo use the Entry for?

import sys
if 3 == sys.version_info[0]: ## 3.X is default if dual system
    import tkinter as tk     ## Python 3.x
else:
    import Tkinter as tk     ## Python 2.x

def show_choice():
    print(v.get())
    ent.delete(0, "end")

def selmunicipio():
    top = tk.Toplevel()
    top.title("Selección de Municipio")
    v.set(1)

##    for i in listamunicipios:
    for ctr in range(30):
        tk.Radiobutton(top,text=ctr+1,variable=v, command=show_choice,
                       value=ctr+1).grid(row=ctr+1, column=0, sticky='w')
        tk.Radiobutton(top,text=ctr+31,variable=v, command=show_choice,
                       value=ctr+31).grid(row=ctr+1, column=1, sticky='w')
    button = tk.Button(top, text="Elige y pulsa aquí", command=top.destroy)
    button.grid(row=100, column=0)

root=tk.Tk()
v=tk.IntVar()
ent=tk.Entry(root, bg="lightblue")
ent.grid(row=1)
tk.Button(root, text="Quit", command=root.quit).grid(row=100)
selmunicipio()
root.mainloop()