rpsls.py Simple version

rpsls.py

# Rock-paper-scissors-lizard-Spock template


# The key idea of this program is to equate the strings
# "rock", "paper", "scissors", "lizard", "Spock" to numbers
# as follows:
#
# 0 - rock
# 1 - Spock
# 2 - paper
# 3 - lizard
# 4 - scissors

# helper functions
items = {0:"rock",
         1:"Spock",
         2:"paper",
         3:"lizard",
         4:"scissors",
         }

def number_to_name(number):
    # fill in your code below
    
    # convert number to a name using if/elif/else
    # don't forget to return the result!
    name = items.get(number)
    if name:
        return name
    else:
        return "Invalid Choice %s" % name
    
def name_to_number(name):
    # fill in your code below

    # convert name to number using if/elif/else
    # don't forget to return the result!
    for id_,n in items.items():
        if n == name:
            return id_
    return "Invalid Choice %s" % name


import random
def rpsls(name): 
    # fill in your code below

    # convert name to player_number using name_to_number
    player_number = name_to_number(name)

    # compute random guess for comp_number using random.randrange()
    comp_number = random.randrange(4)
    # compute difference of player_number and comp_number modulo five
    difference = (player_number - comp_number) % 5

    # use if/elif/else to determine winner
    if difference in (1,2):
        winner = "Player"
    elif difference in (3,4):
        winner = "Computer"
    elif difference == 0:
        winner = "Noone"
    else:
        winner = "Shouldn't happen"
        

    # convert comp_number to name using number_to_name
    comp_name = number_to_name(comp_number)
    
    # print results
    print
    print "Player chooses %s" % name
    print "Computer chooses %s"% comp_name
    print "%s wins!" % winner
    
# test your code
rpsls("rock")
rpsls("Spock")
rpsls("paper")
rpsls("lizard")
rpsls("scissors")

# always remember to check your completed program against the grading rubric