import pygame
import sys
pygame.init()

display = pygame.display.set_mode((300,300))
display.fill((255,255,255))

pygame.draw.polygon(display, (0,0,255), [(120,120), (40,160), (40,220), (200,220), (200,160)], width=0)

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