Array of radiobuttons

from tkinter import *

win = Tk()

win.geometry("300x300")

def Select(i):

  print(i)  

n = 3

rbn, I = list(range(n)), IntVar()

for i in range(n):

  rbn[i] = Radiobutton(win, value=i+1, variable=I, command=lambda I=i:Select(I))

  rbn[i].place(x=i*50, y=100)

win.mainloop()