PyGame: detecting key press, but not key

[qrani]

I can't get it to detect what key is being pressed.

import pygame
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((640, 400))
while True:
    for event in pygame.event.get():
        print('e')
        if event.type == pygame.KEYDOWN:
            print('q')
            if event.type == K_w:
                print('w')
            if event.type == K_s:
                print('s')
            if event.type == K_a:
                print('a')
            if event.type == K_d:
                print('d')

it will print 'e', and if i'm pressing a key it will print 'q', but
if i'm pressing w, s, a, or d it won't print 'w', 's', 'a' or 'd'
I don't know what i'm doing wrong here

[Mekire]

Not this:

        if event.type == pygame.KEYDOWN:
            print('q')
            if event.type == K_w:
                print('w')
            if event.type == K_s:
                print('s')
            if event.type == K_a:
                print('a')
            if event.type == K_d:
                print('d')

This:

        if event.type == pygame.KEYDOWN:
            print('q')
            if event.key == K_w:
                print('w')
            if event.key  == K_s:
                print('s')
            if event.key  == K_a:
                print('a')
            if event.key  == K_d:
                print('d')

[qrani]

thanks