Rock-Paper-Scissors Game

Question

I’m currently pretty stuck on this rock, paper, scissors program and would greatly appreciate some help. I have looked through other posts concerning rock, paper, scissors programs but I’m still stuck.

The error I’m getting currently is When I ask the user to choose ‘Rock’, ‘Paper’ or ‘Scissors’ it will keep asking it a couple more times and then I get an error. Also, it seems to me that a good portion of the posts I look at involve concepts that I haven’t used in class, so I’m not comfortable with them.

      choices = [ 'Rock', 'Paper', 'Scissors' ]
# 1. Greetings & Rules
def showRules():
    print("n*** Rock-Paper-Scissors ***n")

    print("nEach player chooses either Rock, Paper, or Scissors."
          "nThe winner is determined by the following rules:"
          "n   Scissors cuts Paper   ->  Scissors wins"
          "n   Paper covers Rock     ->  Paper wins"
          "n   Rock smashes Scissors ->  Rock winsn")

# 2. Determine User Choice
def getUserChoice():
    usrchoice = input("nChoose from Rock, Paper or Scissors: ").lower()
    if (usrchoice not in choices):
        usrchoice = input("nChoose again from Rock, Paper or Scissors: ").lower()
    print('User chose:', usrchoice)
    return usrchoice

# 3. Determine Computer choice
def getComputerChoice():
    from random import randint
    randnum = randint(1, 3)
    cptrchoice = choices(randnum)
    print('Computer chose:', cptrchoice)
    return randnum

# 4. Determine Winner
def declareWinner(user, computer):
    if usrchoice == cptrchoice:
        print('TIE!!')
    elif (usrchoice == 'Scissors' and cptrchoice == 'Rock'
         or usrchoice == 'Rock' and cptrchoice == 'Paper'
         or usrchoice == 'Paper' and cptrchoice == 'Scissors'):
        print('You lose!! :(')
    else:
        print('You Win!! :)')


#5. Run program
def playGame():
    showRules()                     # Display the title and game rules
    user = getUserChoice()       # Get user selection (Rock, Paper, or Scissors)
    computer = getComputerChoice()  # Make and display computer's selection
    declareWinner(user, computer)   # decide and display winner

Asked By: Cameron Rogozinsky

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Source

Answer 1

You have few problems with the code:

First is you are converting user input to lowercase but your list items are not. So the check will fail.

choices = [ 'rock', 'paper', 'scissors' ]

Second thing is you are calling choice(randnum) which will throw an error as you have to use [] to retrieve element from list.

cptrchoice = choices[randnum]

Third is what happens if you enter invalid string. You only check with if but you need while loop

while (usrchoice not in choices):
    usrchoice = getUserChoice() #input("nChoose again from Rock, Paper or Scissors: ").lower()

Fourth is in declareWinner, your params are user and computer but then you are using usrchoice and cptrchoice in if conditions

def declareWinner(usrchoice, cptrchoice):
    if usrchoice == cptrchoice:

Try this and give it a shot

Answered By: sam

Answer 2

here is what i did.

you play until you win. it uses the number scheme from chmod to determine wins and losses, and ties. it does not report losses or ties. i can’t remember exactly how i figure this out. i was in the zone.

import random
print("Play until you win!") 
print("Rock, Paper, or Scissors?")
class GameEngine:
    def __init__(self, computer):
        self.computer = computer
starter = GameEngine(random.choice([-4,-2,-1]))
class Player:
    def __init__ (self, options):
        self.options = options
play = Player({"rock":4,"paper":2,"scissors":1})
class ScoreBoard:
    def __init__(self, score, loss):
        self.score = score
        self.loss = loss
while True:
    match = ScoreBoard(play.options[input("Choose: ")]+starter.computer,[0,-1,-2,3]) #the dictionary key pair corresponding to the input of rock paper or scissors
    if match.score in match.loss:
        starter.computer = 0
    else:
        print("You win!")
        break

Answered By: deusopus

Rock-Paper-Scissors Game

Question:

Answers: