pong simplified

import pygame # importing the module
WIDTH = 800
HEIGHT = 600
BALL_COLOR = (0, 255, 0) # Green color  (Red, Green, Blue)
LEFT_COLOR = (255, 0, 0)
BLACK = (0, 0, 0)


pygame.init() # initializing the module
window = pygame.display.set_mode((WIDTH, HEIGHT))  # making the window of size WIDTH and HEIGHT
pygame.display.set_caption('Pong Game') # setting the title of the window
clock = pygame.time.Clock() # creating a clock to control frames per second
running = True  # status variable which tells if the game is running or not
x = 100
y = 100
speed = 7
speedx = speed
speedy = speed
yleft = 250
yright = 250

#initialize player scores
score_left = 0
score_right = 0

while running:           #-> while the game is running >>> 1 frame every time the loop runs
    window.fill((43, 79, 52)) # r g b color inside
    clock.tick(60) # controlling the frame rate -> it will run 60 times in every second

    for event in pygame.event.get():  # for each event occuring in the window
        if event.type == pygame.QUIT:  # checking if the close button was pressed
            running = False     # update game status to stop (not running)

    x += speedx
    y += speedy
    ball = pygame.draw.circle(window, BALL_COLOR, (x, y), 25)

    keys = pygame.key.get_pressed()   # this will get all the buttons that are pressed right now

    left = pygame.draw.rect(window, LEFT_COLOR, (30, yleft, 20, 100)) # xposition, yposition, xwidth, ywidth
    right = pygame.draw.rect(window, LEFT_COLOR, (WIDTH-30, yright, 20, 100)) # xposition, yposition, xwidth, ywidth

    if keys[pygame.K_w] and left.top > 0: # if the KEY_"w" is pressed and the top of left player > 0 ( player is not already at the top)
        yleft -= speed              # yleft = yleft - speed
    if keys[pygame.K_UP] and right.top > 0: # if the KEY_UP is pressed and the top of right player > 0 ( player is not already at the top)
        yright -= speed              # yright = yright - speed

    if keys[pygame.K_s] and left.bottom < HEIGHT:
        yleft += speed
    if keys[pygame.K_DOWN] and right.bottom < HEIGHT:
        yright += speed

    if left.colliderect(ball): # if left rect is colliding with ball rect
        speedx = speed
    if right.colliderect(ball): # if right rect is colliding with ball rect
        speedx = -speed


    #for ball bouncing over four walls
    if ball.right >= WIDTH:
        speedx = -speed
        score_left+=1

    if ball.left <= 0:
        speedx = speed
        score_right+=1

    if ball.bottom >= HEIGHT:
        speedy = -speed

    if ball.top <= 0:
        speedy = speed

    #display scores
    font = pygame.font.Font(None, 50)
    text = font.render(str(score_left), 1, BLACK)
    window.blit(text, (250,10))
    text = font.render(str(score_right), 1, BLACK)
    window.blit(text, (520,10))


    pygame.display.update()  # update our window with all the changes that we have done
pygame.quit() # closes everything (closes the window)