使用pygame事件突破python for循环

Question

I am having an issue breaking out of a for loop in python, using pygame. Specifically, I'm trying to break out of the loop on release of a key. For example when key "W" is held down, the code should execute, but then immediately break out of loop when the "W" is released.

I have tried to use pygame.key.get_pressed() and if event.type == KEYUP: but I cannot seem to get it right. Can anyone help?

while 1:
  for event in pygame.event.get():   
    if event.type == pygame.QUIT: 
      doQuitStuff()
    elif event.type == pygame.MOUSEBUTTONDOWN:
      doMouseButtonStuff()
    elif event.type == KEYDOWN:
      if event.key == pygame.K_p:
        doPStuff()
      elif event.key == pygame.K_e:
        doEStuff()
      elif event.key in foo:
        doFooStuff()
        for i in xrange(100):
          doThisStuffOnlyIfKeyInFooIsHeldDown() #This for loop finishes
                                                #execution even if I release the
                                                #key in "foo"      

Answer 1

You have to do without for loop - and while True will do as loop.

run_loop = False
i = 0

while True:

    # - events -

    for event in pygame.event.get():

        if event.type == KEYDOWN:
           if event.key == pygame.K_w:
              # start loop
              run_loop = True
              i = 0

        elif event.type == KEYUP:
           if event.key == pygame.K_w:
              # stop loop
              run_loop = False

    # - updates -

    if run_loop and i < 100:
        i += 1
        doThisStuffOnlyIfKeyInFooIsHeldDown() 

    # - draws -