一、安裝
pip install threadpool
二、使用介紹
(1)引入threadpool模塊
(2)定義線程函數
(3)創建線程 池threadpool.ThreadPool()
(4)創建需要線程池處理的任務即threadpool.makeRequests()
(5)將創建的多個任務put到線程池中,threadpool.putRequest
(6)等到所有任務處理完畢theadpool.pool()
import threadpool def ThreadFun(arg1,arg2): pass def main(): device_list=[object1,object2,object3......,objectn]#需要處理的設備個數 task_pool=threadpool.ThreadPool(8)#8是線程池中線程的個數 request_list=[]#存放任務列表 #首先構造任務列表 for device in device_list: request_list.append(threadpool.makeRequests(ThreadFun,[((device, ), {})])) #將每個任務放到線程池中,等待線程池中線程各自讀取任務,然后進行處理,使用了map函數,不了解的可以去了解一下。 map(task_pool.putRequest,request_list) #等待所有任務處理完成,則返回,如果沒有處理完,則一直阻塞 task_pool.poll() if __name__=="__main__": main()
說明:makeRequests存放的是要開啟多線程的函數,以及函數相關參數和回調函數,其中回調函數可以不寫(默認是無),也就是說makeRequests只需要2個參數就可以運行。
二、代碼實例
import time
def sayhello(str): print "Hello ",str time.sleep(2) name_list =['xiaozi','aa','bb','cc']
start_time = time.time() for i in range(len(name_list)): sayhello(name_list[i]) print '%d second'% (time.time()-start_time)
改用線程池代碼,花費時間更少,更效率
import time import threadpool def sayhello(str): print "Hello ",str time.sleep(2) name_list =['xiaozi','aa','bb','cc'] start_time = time.time() pool = threadpool.ThreadPool(10) requests = threadpool.makeRequests(sayhello, name_list) [pool.putRequest(req) for req in requests] pool.wait() print '%d second'% (time.time()-start_time)
當函數有多個參數的情況,函數調用時第一個解包list,第二個解包dict,所以可以這樣:
def hello(m, n, o): """""" print "m = %s, n = %s, o = %s"%(m, n, o) if __name__ == '__main__': # 方法1 lst_vars_1 = ['1', '2', '3'] lst_vars_2 = ['4', '5', '6'] func_var = [(lst_vars_1, None), (lst_vars_2, None)] # 方法2 dict_vars_1 = {'m':'1', 'n':'2', 'o':'3'} dict_vars_2 = {'m':'4', 'n':'5', 'o':'6'} func_var = [(None, dict_vars_1), (None, dict_vars_2)] pool = threadpool.ThreadPool(2) requests = threadpool.makeRequests(hello, func_var) [pool.putRequest(req) for req in requests] pool.wait()
需要把所傳入的參數進行轉換,然后帶人線程池。
def getuserdic(): username_list=['xiaozi','administrator'] password_list=['root','','abc123!','123456','password','root'] userlist = [] for username in username_list: user =username.rstrip() for password in password_list: pwd = password.rstrip() userdic ={} userdic['user']=user userdic['pwd'] = pwd tmp=(None,userdic) userlist.append(tmp) return userlist
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