Hello world and drawing some shapes using pygame

HelloPygame.py

import pygame, sys
from pygame.locals import *

#Set up pygame
pygame.init()

#Set up the window
windowSurface = pygame.display.set_mode((500, 400), 0 , 32)
pygame.display.set_caption('Hello World')

#Set up the colors
BLACK = (0,0,0)
RED = (255,0,0)
GREEN = (0,255,0)
BLUE = (0,0,255)
WHITE = (255,255,255)

#Set up fonts
basicFont = pygame.font.SysFont(None, 48)

#Set up the text
text = basicFont.render('HELLO WORLD', True, WHITE)
textRect = text.get_rect()
textRect.centerx = windowSurface.get_rect().centerx
textRect.centery = windowSurface.get_rect().centery

#Draw the white background onto the surface
windowSurface.fill(WHITE)

#Draw a blue poligon onto the surface
pygame.draw.polygon(windowSurface, BLUE, ((250, 0), (500,200),(250,400), (0,200) ))

#Draw a green poligon onto the surface
pygame.draw.polygon(windowSurface, GREEN, ((125,100),(375,100),(375,300),(125,300)))

#Draw a red circle onto the surface
pygame.draw.circle(windowSurface, RED, (250,200), 125)

#Get a pixel array of the surface
pixArray = pygame.PixelArray(windowSurface)
pixArray[480][380] = BLACK
del pixArray

#Draw the text onto the surface
windowSurface.blit(text,textRect)

#Draw the window onto the screen
pygame.display.update()

#Run the game loop
while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()