import pygame
from pygame.locals import *
import sys

pygame.init()
display = pygame.display.set_mode((300, 300))

while 1:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_a:
                print("Key A has been pressed")
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_a:
                print("Key A has been released")

        while 1:
            pressed_key = pygame.key.get_pressed()

            if pressed_key[K_a]:
                print("Key A has been pressed")

        pressed_key = pygame.key.get_pressed()
        
        if pressed_key[K_a] and pressed_key[K_b]:
            print("Key A and Key B has been pressed")