[Python] Pygame not responding when i run it

Hello first time user to the site, i am having a problem with Pygame not responding and don't know what is wrong i would be most thankful for any kind of help.

here is the code sorry if this is not proper formating

import pygame
pygame.init
screen = pygame.display.set_mode((500, 500))

while True:
key = pygame.key.get_pressed()
if key[pygame.K_a] == True:
print('works')

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