Python Class - Rock Paper Scissors

rockPaperScissors.py

"""
Some python from a free python class offered by The Tech Academy Portland
https://www.meetup.com/techacademy/
"""

import math
from random import randint

randMin = 0
randMax = 2
weaponsList = ('Rock', 'Paper', 'Scissors')

def play():
    try:
        string = 'Throw! (You can enter: '
        for i in range(0, len(weaponsList)):
            string += weaponsList[i]
            if (i < len(weaponsList)-1):
                string += ', '
        string += '): '
        user = raw_input(string)

        print('You showed: ' + user.lower().capitalize())
        
        num = randint(randMin, randMax)
        computer = weaponsList[num]
        
        print('I showed: ' + computer)
        
        winner = whoWon(user, computer)
        print(winner)
        
        playAgain()
    except:
        playAgain()

def playAgain():
    again = raw_input('Do you want to play again? Yes or No: ')

    if again.lower() == 'no':
        quit()
    elif again.lower() == 'yes':
        play()
    else:
        print('Enter Yes or No: ')
        playAgain()

def whoWon(user, computer):
    if user.lower() == computer.lower():
        return 'Draw'
    elif ((user.lower() == 'Rock'.lower()) and (computer == 'Scissors')):
        return 'Snap! Your Rock beat my Scissors.'
    elif ((user.lower() == 'Paper'.lower()) and (computer == 'Rock')):
        return 'Oh shoot! Your flimsy Paper covered my Rock!'
    elif ((user.lower() == 'Scissors'.lower()) and (computer == 'Paper')):
        return 'I hope you run with those!'
    else:
        return 'I Won!'

print('Let\'s play some ro sham beaux!')
play()