Joining the Dots

What have we got?

We have catered to all the components required to play a round. All the essential functionalities are there, how will we implement the code for multiple rounds? This is our inventory of already created functions:

# Import command for the 'random' library
import random

# Function to display game instructions
def display_instructions():
    print('Welcome to Rock Paper Scissors.\n')
    print('The rules are simple:')
    print('1. Rock beats scissors')
    print('2. Scissors beat paper')
    print('3. Paper beats rock')

# Function to ask for the number of rounds
def get_rounds():
    rounds = input('\nHow many rounds would you like to play? \nRounds: ')
    rounds = int(rounds)
    return rounds

# Function to get the player's choice
def get_player_choice():
    player_choice = input('\nPlease enter rock, paper, or scissors. \nChoice: ')
    return player_choice

# Function to get the computer's choice
def get_computer_choice():
    options = ['rock', 'paper', 'scissors']
    computer_choice = random.choice(options)
    print('Computer chooses', computer_choice)
    return computer_choice

# Function to determine the winner of the round
def determine_round_winner(player_choice, computer_choice):
    if player_choice == computer_choice:
        print('Tie!')
    elif player_choice == 'rock' and computer_choice == 'scissors':
        print('You win!')
        return 'player'
    elif player_choice == 'rock' and computer_choice == 'paper':
        print('Computer wins!')
        return 'computer'
    elif player_choice == 'paper' and computer_choice == 'rock':
        print('You win!')
        return 'player'
    elif player_choice == 'paper' and computer_choice == 'scissors':
        print('Computer wins!')
        return 'computer'
    elif player_choice == 'scissors' and computer_choice == 'rock':
        print('Computer wins!')
        return 'computer'
    elif player_choice == 'scissors' and computer_choice == 'paper':
        print('You win!')
        return 'player'

# Function to contain the flow of the whole program
def main():
    display_instructions()
    rounds = get_rounds()
    player_choice = get_player_choice()
    computer_choice = get_computer_choice()
    winner = determine_round_winner(player_choice, computer_choice)
    if winner == 'player':
        player_score += 1
    elif winner == 'computer':
        computer_score += 1
    else:
        pass
    print('Player score:', player_score, '| Computer score:', computer_score)

What’s next?

In the main() function, which manages the game’s flow, we will make the steps required for each round go in a loop. We need to run these lines for the total number of rounds using the for loop.

The portion of code that will need to go in the loop includes:

• The get_player_choice() function
• The get_computer_choice() function
• The determine_round_winner() function
• The portion to update and print the score

Let’s implement a for loop for the number saved in round, and call these functions in the loop.

Try it yourself

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