rock paper scissors game in python

Guri Bee

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19-10-2024

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Rock, Paper, Scissors: Coding a Classic Game in Python

The timeless game of Rock, Paper, Scissors is a perfect introduction to game development. In this article, we'll explore how to implement this classic game in Python, using code snippets from GitHub to illustrate key concepts.

1. The Basics: Generating Computer Choices

The first step is to create a way for the computer to make its move. We can do this by randomly choosing from the three options:

import random

def get_computer_choice():
  """Generates a random choice for the computer."""
  choices = ["rock", "paper", "scissors"]
  return random.choice(choices)

This code snippet, adapted from this GitHub repository, uses the random module to pick a choice at random from the choices list.

2. Getting User Input

We need to allow the user to input their choice. Here's how we can do it:

def get_user_choice():
  """Gets the user's choice."""
  while True:
    user_choice = input("Enter your choice (rock, paper, scissors): ").lower()
    if user_choice in ["rock", "paper", "scissors"]:
      return user_choice
    else:
      print("Invalid choice. Please enter rock, paper, or scissors.")

This function, inspired by another GitHub repository, uses a while loop to ensure the user enters a valid choice.

3. Determining the Winner

The core logic of the game lies in comparing the choices and deciding who wins. This can be achieved with a series of conditional statements:

def determine_winner(user_choice, computer_choice):
  """Determines the winner based on the choices."""
  if user_choice == computer_choice:
    return "It's a tie!"
  elif (user_choice == "rock" and computer_choice == "scissors") or \
       (user_choice == "paper" and computer_choice == "rock") or \
       (user_choice == "scissors" and computer_choice == "paper"):
    return "You win!"
  else:
    return "Computer wins!"

This code snippet, adapted from this GitHub repository, uses elif statements to check for all the possible winning scenarios.

4. Putting it All Together

Now let's combine these components into a complete game:

import random

def get_computer_choice():
  choices = ["rock", "paper", "scissors"]
  return random.choice(choices)

def get_user_choice():
  while True:
    user_choice = input("Enter your choice (rock, paper, scissors): ").lower()
    if user_choice in ["rock", "paper", "scissors"]:
      return user_choice
    else:
      print("Invalid choice. Please enter rock, paper, or scissors.")

def determine_winner(user_choice, computer_choice):
  if user_choice == computer_choice:
    return "It's a tie!"
  elif (user_choice == "rock" and computer_choice == "scissors") or \
       (user_choice == "paper" and computer_choice == "rock") or \
       (user_choice == "scissors" and computer_choice == "paper"):
    return "You win!"
  else:
    return "Computer wins!"

while True:
  computer_choice = get_computer_choice()
  user_choice = get_user_choice()

  print(f"You chose: {user_choice}")
  print(f"Computer chose: {computer_choice}")

  result = determine_winner(user_choice, computer_choice)
  print(result)

  play_again = input("Play again? (y/n): ").lower()
  if play_again != 'y':
    break

This complete code combines all the functions we've created and includes a loop for playing multiple rounds.

5. Additional Considerations

This simple game can be enhanced with more features:

• Score Tracking: Implement a scoring system to track the player's and computer's wins.
• Graphical Interface: Use libraries like Pygame or Tkinter to create a visually appealing interface.
• AI Opponent: Explore algorithms like minimax or Monte Carlo Tree Search to create a more challenging AI opponent.

Conclusion:

This article demonstrated how to implement a basic Rock, Paper, Scissors game in Python using code snippets from GitHub. By understanding the concepts involved, you can further customize and extend this game to explore the exciting world of game development!