KeysTest

from pygame.locals import *
import pygame
import sys
import os

def KEY_PRESSED():
    for Event in pygame.event.get():
        if Event.type == pygame.KEYDOWN:
            if Event.key == K_LEFT or Event.key == K_a:
                return "LEFT"
            if Event.key == K_RIGHT or Event.key == K_d:
                return "RIGHT"
            if Event.key == K_DOWN or Event.key == K_s:
                return "DOWN"
            if Event.key == K_UP or Event.key == K_w:
                return "UP"
            if Event.key == K_TAB:
                return "TAB"
            if Event.key == K_ESCAPE:
                return "QUIT"
            if Event.key == K_SPACE:
                return "SPACE"
        if Event.type == pygame.QUIT:
            return "QUIT"
    return None

GAME_LOOP = True
pygame.init()  # Starting PyGame library.
WIN = pygame.display.set_mode((1280, 720))  # Creating screen.

while GAME_LOOP:
    if KEY_PRESSED() == 'QUIT':
        MAIN_LOOP = False
        pygame.quit()
        sys.exit()
    if KEY_PRESSED() == 'TAB':
        print('Tab')

    pygame.display.update()