Input Loop in Python

gistfile1.py

stage = 1
def show_prompt():
    if stage == 1:
        print "You are between a volcano and a supernova."
        print "1 for volcano, 2 for supernova."


def restart_input():
    print "Nice try."
    input_loop()

def input_loop():
    show_prompt()
    input = raw_input()
    if input == "1":
        print "choice 1"
    elif input == "2":
        print "choice 2"
    else:
        restart_input()
        return
    input_loop()

input_loop()

This could be a little cleaner by removing line 10 and line 21.