[Python] The full screen in the pie game

import pygame
from pygame.locals import *
import ctypes #To obtain resolution

surface = pygame.display.set_mode((500, 500))

while True:
    for event in pygame.event.get():
        if event.type == KEYDOWN:
            if event.key == order('f'): When you press #f
                user32 = ctypes.windll.user32
                screensize = user32.GetSystemMetrics(0), user32.GetSystemMetrics(1) #Discover the resolution
                surface = pygame.display.set_mode(screensize, FULLSCREEN) # Switch to full screen

    pygame.display.update()
    surface.fill((255, 255, 255))