how to record key presses in pygame code example

Example 1: pygame key pressed once

# Outside loop
pressed = False

# Inside loop
if event.type == pygame.KEYDOWN:
	if event.key == pygame.K_a and not pressed: #K_a can be replaced by any key
		# Do something
		pressed = True
	elif event.key != pygame.K_a:
    	pressed = False

Example 2: key pressed pygame

letters = {x: pygame.key.key_code(x) for x in "abcdefghijklmnopqrstuvwxyz"}

touche = pygame.key.get-pressed()

for (l, value) in letters.items() :
  if touche[value] :
    print(f"The letter {l} has been pressed ;)")