程序代写代做代考 Programming Exercise 6-3

Programming Exercise 6-3

Programming Exercise 5-21
import random

# Global constants

COMPUTER_WINS = 1

PLAYER_WINS = 2

TIE = 0

INVALID = 3

ROCK = 1

PAPER = 2

SCISSORS = 3

# main function

def main():

result = TIE

while result==TIE:

# Get computer number

computer = random.randint(1, 3)

# Get player number

player = int(input(‘Enter 1 for rock, ‘ \

‘2 for paper, 3 for scissors: ‘))

print (‘Computer chose’, choiceString(computer))

print (‘You chose’, choiceString(player))

result = rockPaperScissors(computer, player)

if result == TIE:

print(‘You made the same choice as ‘ \

‘the computer. Starting over’)

if (result == COMPUTER_WINS):

print (‘The computer wins the game’)

elif result == PLAYER_WINS:

print (‘You win the game’)

else:

print (‘You made an invalid choice. No winner’)

# The rockPaperScissors function receives numbers representing the

# computer and player’s choices.

# It returns 0 if there is a tie, 1 if the computer won, 2 if the

# player won, or 3 if the player made an invalid choice.

def rockPaperScissors(computer, player):

if(computer == player):

return TIE

if computer == ROCK:

if player == PAPER:

return PLAYER_WINS

elif player == SCISSORS:

return COMPUTER_WINS

else:

return INVALID

elif computer == PAPER:

if player == ROCK:

return COMPUTER_WINS

elif player == SCISSORS:

return PLAYER_WINS

else:

return INVALID

else: #computer chose scissors

if player == ROCK:

return PLAYER_WINS

elif player == PAPER:

return COMPUTER_WINS

else:

return INVALID

# The choiceString function displays a choice in string format

def choiceString(choice):

if choice == ROCK:

return ‘rock’

elif choice == PAPER:

return ‘paper’

elif choice == SCISSORS:

return ‘scissors’

else:

return ‘something went wrong’

# Call the main function.

main()