coursera Python交互编程入门 习题答案

以下代码是我的答案。仅供参考交流

# 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
import random
 
def number_to_name(number):
    # convert number to a name using if/elif/else
    # don't forget to return the result!
    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 'plz input number between 0~4 !'
 
     
def name_to_number(name):
    # convert name to number using if/elif/else
    # don't forget to return the result!
    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:
        return 5
 
 
def rpsls(name): 
    # fill in your code below
    # print the player's  choice
    print '---------------------------------------------------------'
    print 'the player\'s choice is :', name
 
    # 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(0, 5, 1)
     
    # convert comp_number to name using number_to_name and print
    comp_name = number_to_name(comp_number)
    print 'the computer\'s choice is :', comp_name, '\n'
 
    # compute difference of player_number and comp_number modulo five
    diff = (player_number - comp_number) % 5    

    # use if/elif/else to determine winner and print result
    if player_number == 5:
        print 'Wrong Name !'
    elif diff == 0:
        print 'the are equal!'
    elif 0 < diff <= 2:
        print 'player wins!'
    elif diff > 2:
        print 'computer wins!'
    else:
        return  'there are some problems !'

     
     
# test
rpsls("rock")
rpsls("Spock")
rpsls("paper")
rpsls("lizard")
rpsls("scissors")
rpsls('sdvdsssss')
rpsls(123)