Code for Calculator and Snake Game

 

🧮 Simple Calculator (Python CLI)

python
def calculator():
    print("Simple Calculator")
    print("Operations: +, -, *, /")
    while True:
        try:
            num1 = float(input("Enter first number: "))
            op = input("Enter operation: ")
            num2 = float(input("Enter second number: "))

            if op == '+':
                print("Result:", num1 + num2)
            elif op == '-':
                print("Result:", num1 - num2)
            elif op == '*':
                print("Result:", num1 * num2)
            elif op == '/':
                if num2 == 0:
                    print("Cannot divide by zero.")
                else:
                    print("Result:", num1 / num2)
            else:
                print("Invalid operation.")
        except ValueError:
            print("Invalid input.")

        cont = input("Do you want to calculate again? (y/n): ")
        if cont.lower() != 'y':
            break

calculator()

---

🐍 Snake Game (Python with pygame)

Install pygame first:

bash
pip install pygame

Now the code:

python
import pygame
import time
import random

pygame.init()

# Screen settings
width, height = 600, 400
win = pygame.display.set_mode((width, height))
pygame.display.set_caption("Snake Game")

# Colors
white = (255, 255, 255)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)

# Snake settings
block_size = 10
clock = pygame.time.Clock()
speed = 15
font_style = pygame.font.SysFont("bahnschrift", 25)

def message(msg, color):
    mesg = font_style.render(msg, True, color)
    win.blit(mesg, [width / 6, height / 3])

def gameLoop():
    game_over = False
    game_close = False

    x, y = width / 2, height / 2
    x_change = y_change = 0

    snake = []
    length = 1

    foodx = round(random.randrange(0, width - block_size) / 10.0) * 10.0
    foody = round(random.randrange(0, height - block_size) / 10.0) * 10.0

    while not game_over:

        while game_close:
            win.fill(black)
            message("You Lost! Press Q-Quit or C-Play Again", red)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    elif event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -block_size
                    y_change = 0
                elif event.key == pygame.K_RIGHT:
                    x_change = block_size
                    y_change = 0
                elif event.key == pygame.K_UP:
                    y_change = -block_size
                    x_change = 0
                elif event.key == pygame.K_DOWN:
                    y_change = block_size
                    x_change = 0

        if x >= width or x < 0 or y >= height or y < 0:
            game_close = True
        x += x_change
        y += y_change
        win.fill(black)
        pygame.draw.rect(win, green, [foodx, foody, block_size, block_size])
        snake_head = [x, y]
        snake.append(snake_head)
        if len(snake) > length:
            del snake[0]

        for segment in snake[:-1]:
            if segment == snake_head:
                game_close = True

        for block in snake:
            pygame.draw.rect(win, white, [block[0], block[1], block_size, block_size])

        pygame.display.update()

        if x == foodx and y == foody:
            foodx = round(random.randrange(0, width - block_size) / 10.0) * 10.0
            foody = round(random.randrange(0, height - block_size) / 10.0) * 10.0
            length += 1

        clock.tick(speed)

    pygame.quit()
    quit()

gameLoop()