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。
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()
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