# Python Basic Coding Games

# Rock, Paper and Scissors

1. You’re going to need to [import](https://realpython.com/python-import/) the module you’ll use to simulate the computer’s choices: <mark>import random</mark>
    

2)[Taking input from a user](https://realpython.com/python-input-output/) is pretty straightforward in Python. The goal here is to ask the user what they would like to choose as an action and then assign that choice to a variable: **<mark>user_input = input("Type Rock/Paper/Scissors or Q to quit: ").lower()</mark>**

<details data-node-type="hn-details-summary"><summary>This will prompt the user to enter a selection and save it to a variable for later use. Now that the user has selected an action, the computer needs to decide what to do.</summary><div data-type="detailsContent"></div></details>

3)[Random selections](https://realpython.com/python-random/) are a great way to have the computer choose a [pseudorandom](https://en.wikipedia.org/wiki/Pseudorandom_number_generator) value.

You can use `random.choice()` to have the computer randomly select between the actions: random\_number = <mark>random.randint(0, 2) # rock: 0, paper: 1, scissors: 2 computer_pick = options[random_number]</mark>

1. **Determine a Winner**
    

Now that both players have made their choice, you just need a way to decide who wins. Using an `if` … `elif` … `else` block, you can compare players’ choices and determine a winner:

<mark>if user_input == "rock" and computer_pick == "scissors": print("You won!") user_wins += 1</mark>

<mark>elif user_input == "paper" and computer_pick == "rock": print("You won!") user_wins += 1</mark>

<mark>elif user_input == "scissors" and computer_pick == "paper": print("You won!") user_wins += 1</mark>

<mark>else: print("You lost!") computer_wins += 1</mark>

By comparing the tie condition first, you get rid of quite a few cases. If you didn’t do that, then you’d need to check each possible action `user_action` and compare it against each possible action for `computer_action`. By checking the tie condition first, you’re able to know what the computer chose with only two conditional checks of `computer_action`.

5) Complete Code

`import random`

`user_wins = 0 computer_wins = 0`

`options = ["rock", "paper", "scissors"]`

`while True: user_input = input("Type Rock/Paper/Scissors or Q to quit: ").lower() if user_input == "q": break`

`if user_input not in options: continue`

`random_number = random.randint(0, 2) # rock: 0, paper: 1, scissors: 2 computer_pick = options[random_number] print("Computer picked", computer_pick + ".")`

`if user_input == "rock" and computer_pick == "scissors": print("You won!") user_wins += 1`

`elif user_input == "paper" and computer_pick == "rock": print("You won!") user_wins += 1`

`elif user_input == "scissors" and computer_pick == "paper": print("You won!") user_wins += 1`

`else: print("You lost!") computer_wins += 1`

`print("You won", user_wins, "times.") print("The computer won", computer_wins, "times.") print("Bye")`