falling snows

import pygame

import random

pygame.init()

black = [0, 0, 0]

white = [255,255,255]

sizeX = 400

sizeY = 500

size = [sizeX, sizeY]

screen = pygame.display.set_mode(size)

pygame.display.set_caption("Denkybrain Loves Graphics")

done = False

clock = pygame.time.Clock()

## go type codes here

stars = [] # list for coordinates of star objects

for i in range(50):

    x = random.randrange(0, 400)

    y = random.randrange(0, 500)

    stars.append([x,y]) # append x,y coordinates into 'stars' list

###

while done == False:

    for event in pygame.event.get() :

        if event.type == pygame.QUIT :

            done = True

    screen.fill(black)

    

    for i in range(len(stars)):

        pygame.draw.circle(screen, white, stars[i], 2)

        stars[i][1] = stars[i][1] + 1

        if stars[i][1] >  sizeY :

            stars[i][1] = -1

    clock.tick(20)

    pygame.display.flip()

pygame.quit()