Rock Paper Scissors Lizard Spock

rpslS.py

import random

def number_to_name(number):
    
    if number==0:
        return 'rock'
    elif number==1:
        return 'Spock'
    elif number==2:
        return 'paper'
    elif number==3:
        return 'lizard'
    elif number==4:
        return 'scissors'
    else:
        print 'invalid number'
            
def name_to_number(name):
  
    if name=='rock':
        return 0
    elif name=='Spock':
        return 1
    elif name=='paper':
        return 2
    elif name=='lizard':
        return 3
    elif name=='scissors':
        return 4
    else:
        print 'invalid name'

def rpsls(name): 
    
    player_number=name_to_number(name) 

    comp_number=random.randrange(0,5) 
    
    result=(player_number-comp_number)%5 
        
    if result in [1, 2]:
        message="Player wins!"
    elif result==0:
        message="Player and computer tie!"
    else:
        message="Computer wins!" 
    
    computer_guess=number_to_name(comp_number)
    player_guess=name
    
    print "Player chooses "+str(player_guess)
    print "Computer chooses "+str(computer_guess)
    print message,'\n'
    
rpsls("rock")
rpsls("Spock")
rpsls("paper")
rpsls("lizard")
rpsls("scissors")