Python simple snake game

import pygame, sys, time, random  # Necessary libraries


def bug_check():  # Checking the mistakes, and closing the program if it does(while printing how many bugs)
    bugs = pygame.init()
    if bugs[1] > 0:
        print("There are", bugs[1], "bugs! quiting.....")
        time.sleep(3)
        sys.exit("Closing program")
    else:
        print("The game was initialized")


def you_lose():  # When you lose, it will show a message
    font_game_over = pygame.font.SysFont("times new roman", 44)  # Choosing the font and size of the message
    game_over_surface = font_game_over.render("Game over :(", True, red)  # It chooses the message and the color
    game_over_position = game_over_surface.get_rect()  # Chooses the geometry of the message box(rectangle in this case)
    game_over_position.midtop = (360, 15)  # Position of the message inside the screen
    player_screen.blit(game_over_surface, game_over_position)  # Put the message in the said position
    scoring(0)  # Calls the scoring function and shows it at the end
    pygame.display.flip()  # Updates the screen
    quiting()  # Calls the exit function


def quiting():  # When you want to quit, it will wait 4 seconds and exit
    time.sleep(4)
    pygame.quit()
    sys.exit()


def scoring(choice=1):  # It will show the score on the top side of the screen, it updates automaticaly
    score_font = pygame.font.SysFont("times new roman", 16)  # Choosing the font and size of the message
    score_surface = score_font.render("Score : {}".format(score), True, black)  # It chooses the message and the color
    score_position = score_surface.get_rect()  # Chooses the geometry of the message box(rectangle in this case)
    if choice == 1:  # By default it puts it on the top
        score_position.midtop = (40, 10)
    else:  # Unless its game over, where it puts right below the game over message
        score_position.midtop = (360, 80)
    player_screen.blit(score_surface, score_position)  # Put the message in the specified position


# Scoring
score = 0  # Inicial score
# FPS control
fps = pygame.time.Clock()  # It controls the frames per second
# Directions
direction = "RIGHT"  # Initial direction
# Game objects
snake_position = [100, 50]  # Initial snake position
snake_body = [[100, 50], [90, 50], [100, 50]]  # Initial snake body
# It places the food randomly, excluding the border
food_position = [random.randint(1, 71) * 10, random.randint(1, 45) * 10]  # randomizes the food pos, excludes the border
food_spawn = True  # It will be only false when the Snakes eats it, and will be replaced immediately
# Game surface
player_screen = pygame.display.set_mode((720, 460))  # Set screen size
pygame.display.set_caption("Snake v.1.0")  # Set screen title
# Colors
red = pygame.Color("red")  # Defines red color (you can use rgb code instead)
green = pygame.Color("green")  # Defines green color (you can use rgb code instead)
black = pygame.Color("black")  # Defines black color (you can use rgb code instead)
orange = pygame.Color("orange")  # Defines orange color (you can use rgb code instead)
white = pygame.Color("white")  # Defines white color (you can use rgb code instead)
# Bug checking
bug_check()  # Calls bug_check function
# Main game
while True:
    for event in pygame.event.get():  # Here it enters all pre-defined events
        if event.type == pygame.QUIT:  # If the event is one for exiting(alt+f4) etc
            quiting()  # It will call the exiting function
        elif event.type == pygame.KEYDOWN:  # If the event is from the keyboard typing
            if (event.key == pygame.K_RIGHT or event.key == ord("d")) \
                    and (direction != "LEFT"):   # It will define the direction blocking a revert direction ex: R-L, U-D
                direction = "RIGHT"
            if (event.key == pygame.K_LEFT or event.key == ord("a")) \
                    and (direction != "RIGHT"):  # It will define the direction blocking a revert direction ex: R-L, U-D
                direction = "LEFT"
            if (event.key == pygame.K_DOWN or event.key == ord("s")) \
                    and (direction != "UP"):  # It will define the direction blocking a revert direction ex: R-L, U-D
                direction = "DOWN"
            if (event.key == pygame.K_UP or event.key == ord("w")) \
                    and (direction != "DOWN"):  # It will define the direction blocking a revert direction ex: R-L, U-D
                direction = "UP"
            if event.key == pygame.K_ESCAPE:
                quiting()  # It will quit when esc is pressed
    # Snake movement and position
    if direction == "RIGHT":  # The defined direction will change the snake position
        snake_position[0] += 10
    if direction == "LEFT":  # The defined direction will change the snake position
        snake_position[0] -= 10
    if direction == "DOWN":  # The defined direction will change the snake position
        snake_position[1] += 10
    if direction == "UP":  # The defined direction will change the snake position
        snake_position[1] -= 10
    # Snake body
    snake_body.insert(0, list(snake_position))  # It will make the snake grow when the food is taken
    if snake_position == food_position:
        score += 1  # Every food taken will raise the score by 1
        food_spawn = False  # It removes the food from the board
    else:
        snake_body.pop()  # It will keep the snake together
    if food_spawn is False:  # When a food is taken it will respawn randomly
        food_position = [random.randint(1, 71) * 10, random.randint(1, 45) * 10]
    food_spawn = True  # It will set the food to True again, to keep the cycle until the game ends
    # Drawing
    player_screen.fill(white)  # Set the background to white
    for position in snake_body:  # It draws the Snake on the board
        pygame.draw.rect(player_screen, green, pygame.Rect(position[0], position[1], 10, 10))
    # It draws the food on the board
    pygame.draw.rect(player_screen, orange, pygame.Rect(food_position[0], food_position[1], 10, 10))
    if snake_position[0] not in range(0, 711) or snake_position[1] not in range(0, 451):
        you_lose()  # If the Snake hits a wall it will show the game over screen and close the game
    for block in snake_body[1:]:
        if snake_position == block:
            you_lose()  # If the Snake hits itself it will show the game over screen and close the game

    scoring()  # It shows the score at the top of the screen
    pygame.display.flip()  # It constantly updates the screen
    fps.tick(20)  # It sets the fps to a reasonable value