CloudsPygame

# clouds with pygame
# Import Libraries
import pygame, sys
from pygame.locals import *
pygame.init()
import math
from random import randint


DarkBlue = (0,153,255)
Grey1 =(142, 150, 163)
Mist1 = (213, 216, 222)
Pink1 =(255, 230, 234)
White1 = (255,255,255)

def draw_cloud(x, y, l, h):
    if y > 200:
        col = Grey1
    elif y > 170:
        col = Mist1
    elif y < 130:
        col = Pink1
    else:
        col = White1

    pygame.draw.ellipse(mainDisplay, col, [x, y, l, h])


def polar(r, theta):
    pi = 3.1415927
    ang = theta * pi /180
    yn = int(r*math.sin(ang)) + 200
    xn = int(r*math.cos(ang)) + 200
    return xn, yn


# Set up display area
Width = 500
Height = 500
mainDisplay = pygame.display.set_mode((Width,Height))
mainDisplay.fill(DarkBlue)

pygame.display.set_caption('Clouds')


# Main section
# mid cloud
for loop in range(10):

    ll = randint(30,70)
    hh = randint(30,70)
    th0 = randint(180,360)
    rr = randint(10,80)
    coords = polar(rr, th0)
    draw_cloud(coords[0], coords[1], ll, hh)

# mid cloud
for loop in range(150):

    ll = randint(10,30)
    hh = randint(10,30)
    th0 = randint(180,360)
    rr = randint(30,100)
    coords = polar(rr, th0)
    draw_cloud(coords[0], coords[1], ll, hh)

# outer cloud
for loop in range(300):

    ll = randint(2,10)
    hh = randint(2,10)
    th0 = randint(180,360)
    rr = randint(55,100)
    coords = polar(rr, th0)
    draw_cloud(coords[0], coords[1], ll, hh)

# under cloud
for loop in range(100):

    ll = randint(2,10)
    hh = randint(2,10)
    th0 = randint(0,180)
    rr = randint(30,60)
    coords = polar(rr, th0)
    draw_cloud(coords[0], coords[1], ll, hh)

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