ошибка в pygame Python

import pygame
import sys

def run():
    pygame.init()
    screen = pygame.display.set_mode(1200, 800)
    pygame.dysplay.set_caption("Космические защитники")
    bg_color = (0, 0, 0)

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

        screen.fill(bg_color)
        pygame.display.flip()
run()

ошибка:

Traceback (most recent call last):
  File "D:\Python code\my 1 game.py", line 1, in <module>
    import pygame
ModuleNotFoundError: No module named 'pygame'