Codeacademy Python Lesson: Rock, Paper, Scissors

RPS.py

"""This is a Rock-Paper-Scissors game. It prompts the user to select either Rock, Paper or Scissors. The computer then randomly selects either rock, paper or scissors and then compares the user's choice and the computer's choice. Finally it determines if the user has won and informs the user of the outcome"""
from random import randint
from time import sleep
options = ["R", "P", "S"]
LOSE = "You lost!"
WIN = "You Win!"
def decide_winner(user_choice, computer_choice):
  print("%s") %(user_choice)
  print("Computer Selecting...")
  sleep(1)
  print("%s") %(computer_choice)
  user_choice_index = options.index(user_choice)
  computer_choice_index = \
  options.index(computer_choice)
  if user_choice_index == computer_choice_index:
    print("It's a tie!")
    play_RPS()
  elif user_choice_index == 0 and \
  computer_choice_index == 2:
    print(WIN)
  elif user_choice_index == 1 and \
  computer_choice_index == 0:
    print(WIN)
  elif user_choice_index == 2 and \
  computer_choice_index == 1:
    print(WIN)
  elif user_choice_index > 2:
    print("Your option should not be greater than 2")
    return
  else:
    print(LOSE)
def play_RPS():
  print("Rock, Paper, Scissors!")
  user_choice = raw_input("Select R for Rock, P for Paper, or S for Scissors:")
  sleep(1)
  user_choice = user_choice.upper()
  computer_choice = options[randint(0, len(options) - 1)]
  decide_winner(user_choice, computer_choice)
play_RPS()