title: Why does my simple pygame lag?
body: <p>I have been making a simple python game using pygame and after I added the feature of switching guns the game started to lag. I have no idea why it is lagging. I have tried rebooting but it didn't work. The code is really short so maybe it is just my computer, but if there is anything that may help run it faster please let me know. Here is the code:</p>
  
  <pre><code>import sys, pygame, pygame.mixer
  from pygame.locals import *
  
  pygame.init()
  
  size = width, height = 600, 400
  
  screen = pygame.display.set_mode(size)
  
  pygame.display.set_caption('Blue Screen of Death')
  
  #variables
  x = 100
  y = 200
  gun_type = "gun1"
  gun = pygame.image.load("gun1.png")
  gun = pygame.transform.scale(gun,(500,250))
  gun_sound = pygame.mixer.Sound("gun_sound.wav")
  clock = pygame.time.Clock()
  
  while 1:
    mx, my = pygame.mouse.get_pos()
    for event in pygame.event.get():
      if event.type == pygame.QUIT:sys.exit()
  
      elif event.type == KEYDOWN and event.key == K_ESCAPE:
        sys.exit()
      elif event.type == MOUSEBUTTONDOWN:
        gun_sound.play()
      elif event.type == KEYDOWN and event.key == K_1:
        gun = pygame.image.load("gun1.png")
        gun = pygame.transform.scale(gun,(500,250))
        gun_type = "gun2"
      elif event.type == KEYDOWN and event.key == K_2:
        gun = pygame.image.load("gun2.png")
        gun = pygame.transform.scale(gun,(500,250))
        gun_type = "gun2"
      elif event.type == KEYDOWN and event.key == K_TAB:
      if gun_type == "gun2":
        gun_type = "gun2_aimed"
      elif gun_type == "gun2_aimed":
        gun_type = "gun2"
      elif gun_type == "gun2_aimed":
        gun = pygame.image.load("gun2_aimed.png")
        gun = pygame.transform.scale(gun,(500,250))
  
  
  
    #frames per second
    clock.tick(60)
  
    hallway = pygame.image.load("hallway.png")
    hallway = pygame.transform.scale(hallway,(600,400))
    screen.blit(hallway,(0,0))
  
    screen.blit(gun,(mx-100,y))
  
    pygame.display.flip()
  </code></pre>
  
  <p>Thanks for your help.</p>