reddit.py

from tkinter import *


def sel():
    selection = "You selected the option " + str(var.get())
    label.config(text=selection)

root = Tk()
var = IntVar()

R1 = Radiobutton(root, text="Option 1", variable=var, value=1, command=sel)
R1.pack(anchor=W)
R2 = Radiobutton(root, text="Option 2", variable=var, value=2, command=sel)
R2.pack(anchor=W)
R3 = Radiobutton(root, text="Option 3", variable=var, value=int(var), command=sel)
R3.pack(anchor=W)

label = Label(root)
label.pack()
root.mainloop()