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我正在用 pygame 制作图形界面。该程序通常运行得很快，但是每当我按下按键时，鼠标都会拒绝移动半秒钟。我迷失了想法，想知道是否有人可以给我一些指导。

这是我的代码如何工作的一般意义，我确实认为这是顶级主循环、绑定或基础结构的问题，因为每个键绑定函数都会出现问题：



#######PERPETUAL ACTIONS#
_perpetual_actions = []

def start_doing(function,insertAt=None):
    global _perpetual_actions
    if insertAt==None:
        insertAt=len(_perpetual_actions)
    _perpetual_actions.insert(insertAt,function)

def stop_doing(function):
    global _perpetual_actions
    if _perpetual_actions.count(function):
        _perpetual_actions.remove(function)

def do_perpetual_actions():
    global _perpetual_actions
    for action in _perpetual_actions:
        action()

def print_perpetual_actions():
    global _perpetual_actions
    for action in _perpetual_actions:
        print action.__name__


######BINDING INFRASTRUCTURE######## 

_bindings_dict = { }

def get_action(key, mod):
    try:
        action = _bindings_dict[(key,mod)]
    except KeyError:
        action = None
    return action

def get_binding(action_to_find):
    for event, action in _bindings_dict.iteritems():
        if action == action_to_find:
            return event
    return None

def bind(event, action):
    _bindings_dict[event] = action

def unbind(event):
    _bindings_dict.pop(event)

def swap_bindings(newBindings):
    _bindings_dict = newBindings




####MAIN LOOP####
if '-t' in sys.argv:
    test()
while True:
    for event in pygame.event.get():
        if event.type == MOUSEMOTION: 
            mousex, mousey = event.pos 
            mouse.x = mousex 
            mouse.y = mousey 
        elif event.type == KEYDOWN:
            action = get_action(event.key,event.mod)
            if not action == None:
                action()
        elif event.type == KEYUP:
            action = get_action(-event.key,event.mod)
            if not action == None:
                action()
        elif event.type == QUIT:
            quit()
    do_perpetual_actions()
    clock.tick(40)

绑定字典是稍后定义的，并且在将来的某个时候，用户可以在程序运行时对其进行修改。如果您有不相关的建议，请告诉我，我刚刚开始，任何 pygame 建议将不胜感激:)

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