python线程池（threadpool）模块使用python2.7

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一、安装与简介

pip install threadpool

pool = ThreadPool(poolsize)  requests = makeRequests(some_callable, list_of_args, callback)  [pool.putRequest(req) for req in requests]  pool.wait()

第一行定义了一个线程池，表示最多可以创建poolsize这么多线程；

第二行是调用makeRequests创建了要开启多线程的函数，以及函数相关参数和回调函数，其中回调函数可以不写，default是无，也就是说makeRequests只需要2个参数就可以运行；

第三行用法比较奇怪，是将所有要运行多线程的请求扔进线程池，[pool.putRequest(req) for req in requests]等同于

　　for req in requests:

　　　　 pool.putRequest(req)

第四行是等待所有的线程完成工作后退出。

二、代码实例

import timedef 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)

改用线程池代码,花费时间更少，更效率

import timeimport 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)

当函数有多个参数的情况，函数调用时第一个解包list，第二个解包dict，所以可以这样：

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()

需要把所传入的参数进行转换，然后带人线程池。

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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