import pygame
import random
pygame.init()

szerokosc = 800
wysokosc = 600

screen = pygame.display.set_mode((szerokosc, wysokosc))
pygame.display.set_caption('graffiti')

zegar = pygame.time.Clock()

screen.fill((20, 20, 20))

uruchomiony = True

while uruchomiony:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            uruchomiony = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_h:
                screen.fill((20, 20, 20))
    mysz = pygame.mouse.get_pressed()
    if mysz[0]:
        pos = pygame.mouse.get_pos()
        kolor = (random.randint(0,255), random.randint(0,255), random.randint(0,255))
        pygame.draw.circle(screen, kolor, pos, 8, 2)

    pygame.display.flip()
    zegar.tick(120)
    
pygame.quit