tkinterでラジオボタンを使う

import tkinter as tk
from tkinter import messagebox

def message():
    messagebox.showinfo('回答', text[var.get()])

root = tk.Tk()
root.geometry('300x250')

text = ['北海道', '群馬', '福井', '和歌山', '島根', '福岡']

for i in range(2):
    root.columnconfigure(i, weight=1)
for i in range(len(text) + 1):
    root.rowconfigure(i, weight=1)    

var = tk.IntVar()
radio = []
for i in range(len(text)):
    radio.append(tk.Radiobutton(root, text=text[i], variable=var, value=i))
    radio[i].grid(row=i, column=0, sticky=tk.W)

answer = tk.Button(root, text='回答', command=message)
answer.grid(row=len(text)+1, column=1, columnspan=2, sticky=tk.EW)

root.mainloop()