Pygame barebones template

pygame_template.py

import pygame, sys
from pygame.locals import *

pygame.init()
DISPLAYSURF = pygame.display.set_mode((400, 300))
pygame.display.set_caption('Hello World!')

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

Also, you could replace
pygame.display.update()
with
pygame.display.flip()
unless you don't plan to update the whole screen.

http://stackoverflow.com/questions/29314987/difference-between-pygame-display-update-and-pygame-display-flip