本文實(shí)例為大家分享了python模擬事件觸發(fā)機(jī)制的具體代碼，供大家參考，具體內(nèi)容如下

EventManager.py

# -*- encoding: UTF-8 -*-# 系統(tǒng)模塊from queue import Queue, Emptyfrom threading import *class EventManager:  def __init__(self):    """初始化事件管理器"""    # 事件對(duì)象列表    self.__eventQueue = Queue()    # 事件管理器開關(guān)    self.__active = False    # 事件處理線程    self.__thread = Thread(target = self.__Run)    # 這里的__handlers是一個(gè)字典，用來保存對(duì)應(yīng)的事件的響應(yīng)函數(shù)    # 其中每個(gè)鍵對(duì)應(yīng)的值是一個(gè)列表，列表中保存了對(duì)該事件監(jiān)聽的響應(yīng)函數(shù)，一對(duì)多    self.__handlers = {}  # {事件類型:[處理事件的方法]}  def __Run(self):    """引擎運(yùn)行"""    while self.__active == True:      try:        # 獲取事件的阻塞時(shí)間設(shè)為1秒        event = self.__eventQueue.get(block = True, timeout = 1)         self.__EventProcess(event)      except Empty:        pass  def __EventProcess(self, event):    """處理事件"""    # 檢查是否存在對(duì)該事件進(jìn)行監(jiān)聽的處理函數(shù)    if event.type_ in self.__handlers:      # 若存在，則按順序?qū)⑹录鬟f給處理函數(shù)執(zhí)行      for handler in self.__handlers[event.type_]:        handler(event)  def Start(self):    """啟動(dòng)"""    # 將事件管理器設(shè)為啟動(dòng)    self.__active = True    # 啟動(dòng)事件處理線程    self.__thread.start()  def Stop(self):    """停止"""    # 將事件管理器設(shè)為停止    self.__active = False    # 等待事件處理線程退出    self.__thread.join()  def AddEventListener(self, type_, handler):    """綁定事件和監(jiān)聽器處理函數(shù)"""    # 嘗試獲取該事件類型對(duì)應(yīng)的處理函數(shù)列表，若無則創(chuàng)建    try:      handlerList = self.__handlers[type_]    except KeyError:      handlerList = []    self.__handlers[type_] = handlerList    # 若要注冊(cè)的處理器不在該事件的處理器列表中，則注冊(cè)該事件    if handler not in handlerList:      handlerList.append(handler)  def RemoveEventListener(self, type_, handler):    """移除監(jiān)聽器的處理函數(shù)"""    #讀者自己試著實(shí)現(xiàn)  def SendEvent(self, event):    """發(fā)送事件，向事件隊(duì)列中存入事件"""    self.__eventQueue.put(event)"""事件對(duì)象"""class Event:  def __init__(self, type_=None):    self.type_ = type_   # 事件類型    self.dict = {}     # 字典用于保存具體的事件數(shù)據(jù)

test.py

# -*- encoding: UTF-8 -*-from threading import *from EventManager import *import time#事件名稱 新文章EVENT_ARTICAL = "Event_Artical"#事件源 公眾號(hào)class PublicAccounts:  def __init__(self,eventManager):    self.__eventManager = eventManager  def WriteNewArtical(self):    #事件對(duì)象，寫了新文章    event = Event(type_=EVENT_ARTICAL)    event.dict["artical"] = u'如何寫出更優(yōu)雅的代碼/n'    #發(fā)送事件    self.__eventManager.SendEvent(event)    print(u'公眾號(hào)發(fā)送新文章')#監(jiān)聽器 訂閱者class Listener:  def __init__(self,username):    self.__username = username  #監(jiān)聽器的處理函數(shù) 讀文章  def ReadArtical(self,event):    print(u'%s 收到新文章' % self.__username)    print(u'正在閱讀新文章內(nèi)容：%s' % event.dict["artical"])"""測(cè)試函數(shù)"""def test():  listner1 = Listener("thinkroom") #訂閱者1  listner2 = Listener("steve")#訂閱者2  eventManager = EventManager()  #綁定事件和監(jiān)聽器響應(yīng)函數(shù)(新文章)  eventManager.AddEventListener(EVENT_ARTICAL, listner1.ReadArtical)  eventManager.AddEventListener(EVENT_ARTICAL, listner2.ReadArtical)  eventManager.Start()  publicAcc = PublicAccounts(eventManager)  while True:    publicAcc.WriteNewArtical()    time.sleep(2)if __name__ == '__main__':  test()