create snake game in python

main.py
import pygame
import random

pygame.init()

# Setting up window size
win_width = 500
win_height = 500
win = pygame.display.set_mode((win_width, win_height))
pygame.display.set_caption("Snake Game")

# Setting up the colors
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

# Setting up the snake properties
snake_x = 250
snake_y = 250
snake_width = 10
snake_height = 10
snake_speed = 10
snake_head = []
snake_head.append(snake_x)
snake_head.append(snake_y)

# Setting up the food properties
food_x = round(random.randrange(0, win_width - snake_width) / 10.0) * 10.0
food_y = round(random.randrange(0, win_height - snake_height) / 10.0) * 10.0
food_width = 10
food_height = 10

# Setting up game clock and font
clock = pygame.time.Clock()
font_style = pygame.font.SysFont(None, 30)

# Function to display score
def show_score(score):
    score_text = font_style.render("Score: " + str(score), True, white)
    win.blit(score_text, [0, 0])

# Main game loop
def gameLoop():
    game_over = False
    game_close = False
    x1_change = 0
    y1_change = 0
    score = 0

    # Keep track of the snake's body as a list of points
    snake_list = []
    Length_of_snake = 1

    # Generate the snake at the start of the game
    while Length_of_snake <= 3:
        x = snake_x + Length_of_snake * 10
        snake_list.append([x, snake_y])
        Length_of_snake += 1

    while not game_over:

        while game_close == True:
            # Game over screen
            win.fill(black)
            game_over_text = font_style.render("Game Over!", True, red)
            win.blit(game_over_text, [win_width/3, win_height/3])
            show_score(score)
            pygame.display.update()

            # Event handling in game over screen
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_r:
                        gameLoop()

        # Handling events within the game
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_speed
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_speed
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_speed
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_speed
                    x1_change = 0

        # Check if snake hits the borders of the screen
        if snake_head[0] >= win_width or snake_head[0] < 0 or snake_head[1] >= win_height or snake_head[1] < 0:
            game_close = True

        # Update the coordinates of the snake head
        snake_head[0] += x1_change
        snake_head[1] += y1_change

        win.fill(black)

        # Draw the food block
        pygame.draw.rect(win, red, [food_x, food_y, food_width, food_height])

        # Draw the snake body
        for segment in snake_list:
            pygame.draw.rect(win, white, [segment[0], segment[1], snake_width, snake_height])

        # Add the current position of the head to the snake body
        snake_segments = []
        snake_segments.append(snake_head[0])
        snake_segments.append(snake_head[1])
        snake_list.append(snake_segments)

        # Remove the oldest coordinate if snake is greater than its length
        if len(snake_list) > Length_of_snake:
            del snake_list[0]

        # Check if snake hits the food block
        if snake_head[0] == food_x and snake_head[1] == food_y:
            food_x = round(random.randrange(0, win_width - snake_width) / 10.0) * 10.0
            food_y = round(random.randrange(0, win_height - snake_height) / 10.0) * 10.0
            Length_of_snake += 1
            score += 10

        # Refreshes the score
        show_score(score)
        pygame.display.update()

        # Check if snake hits its body
        for segment in snake_list[:-1]:
            if segment == snake_head:
                game_close = True

        # Refreshes the game
        pygame.display.update()
        clock.tick(30)

    pygame.quit()
    quit()

gameLoop()
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