import pygame
from pygame.locals import (
    K_UP,
    K_DOWN,
    K_LEFT,
    K_RIGHT,
    K_ESCAPE,
    KEYDOWN,
    QUIT,
)

pygame.init()

SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600

screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

running = True

while running:
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == K_ESCAPE:
                running = False
        elif event.type == QUIT:
            running = False

    screen.fill((0, 80, 0))

    BLACK = (0, 0, 0)
    RED = (255, 0, 0)
    GREEN = (0, 160, 0)
    # pygame.draw.ellipse(screen, RED, (50, 20, 160, 100))
    pygame.draw.rect(screen, BLACK, (100, 100, 40, 40))
    pygame.draw.rect(screen, GREEN, (110, 110, 20, 20))
    pygame.display.update()