Rock-Paper-Scissors-Lizard-Spock

from random import randint
l=[0,1,2,3,4,5]
entity={0:"rock",1:"spock",2:"paper",3:"lizard",4:"scissors"}
def winner(x,y):
    a,b=nextOf(x)
    if y==a or y==b:
        return 1
    else:
        return 0

def nextOf(x):
    a=l[(x+1)%5]
    b=l[(x+2)%5]
    return a,b

def name_to_number(name):
    x=[key for key,value in entity.items() if value == name]
    return x[0]

def number_to_name(number):
    return entity.get(number)

def rpsls(name):
    us1=name.lower()
    us2=number_to_name(randint(0,4))
    print "Player choosed",us1
    print "Computer choosed",us2
    if name_to_number(us1)==name_to_number(us2):
        win=2
    else:
        win=winner(name_to_number(us1),name_to_number(us2))
    if win==0:
        #print us1,"beats",us2
        print"Player Wins!"
    elif win==1:
        #print us2,"beats",us1
        print "Computer Wins!"
    else:
        print"Player and computer tie!"
    print "--------------------------\n"
    
rpsls("rock")
rpsls("Spock")
rpsls("paper")
rpsls("lizard")
rpsls("scissors")