python 3.x - Key Pressing System PyGame -

i'm making basic pong game , want make system button press makes paddle goes or down. i'm new pygame , here's code far.

import pygame, sys pygame.locals import* def pong():  pygame.init()  display=pygame.display.set_mode((600,400),0,32)  pygame.display.set_caption("pong")  black=(0,0,0)  white=(255,255,255)  red=(255,0,0)  display.fill(black)  while true:   def p(b):    pygame.draw.rect(display,white,(50,b,50,10))   xx=150   p(xx)   event in pygame.event.get():    if event.type==keyup , event.key==k_w:     p(xx+10)     xx=xx+10     pygame.display.update()    elif event.type==quit:     pygame.quit()     sys.exit() 

please read tutorials and/or docs. basic , if don't right bite later.

anyway, here's how look:

import pygame  pygame.init()  display = pygame.display.set_mode((600,400))  paddle = pygame.rect(0, 0, 10, 50) paddle.midleft = display.get_rect().midleft  speed = 10  clock = pygame.time.clock() while true:     event in pygame.event.get():         if event.type == pygame.quit:             raise systemexit(0)      keystate = pygame.key.get_pressed()     dy = keystate[pygame.k_s] - keystate[pygame.k_w]     paddle.move_ip(0, dy * speed)      display.fill(pygame.color("black"))     pygame.draw.rect(display, pygame.color("white"), paddle)     pygame.display.update()      clock.tick(30) 

that ok pong still wouldn't write game this. read tutorials , maybe try codereview if want improve code.