Answers for "pygame how to test if a key is clicked"

check key pressed pygame

import pygame
events = pygame.event.get()
for event in events:
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_LEFT:
            location -= 1
        if event.key == pygame.K_RIGHT:
            location += 1

how to detect when a key is pressed in pygame

import pygame

keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT]:
    x -= 1
if keys[pygame.K_RIGHT]:
	x += 1