标签:range 函数 targe port 设置 tip sync lis 同步
先看看下面的几个方法:
join() 方法实现进程间的同步,
等待所有进程退出。参数:
以 tuple 的形式传入
用法:
multiprocessing.Process(group=None, target=None, name=None, args=(), kwargs={}, *, daemon=None)
写一个的例子:
from multiprocessing import Pool import os,time def pr(str): print("The " + str + " is %s" %(os.getpid())) time.sleep(1) print("The " + str + " is close") if __name__ == "__main__": print(‘-------------------------------‘) print("the current pid: "+ str(os.getpid())) # 默认为自己电脑的核数 p = Pool(2) for i in range(5): p.apply_async(pr,args=(‘xdxd‘,)) p.close() p.join() print("----------close-----------------")
通过结果可以看出,是2个进程同时启动,同时启动的进程数与pool中设置的数量和自己电脑的核数有关
结果:
------------------------------- the current pid: 9562 The xdxd is 9563 The xdxd is 9564 The xdxd is close The xdxd is close The xdxd is 9563 The xdxd is 9564 The xdxd is close The xdxd is close The xdxd is 9563 The xdxd is close ----------close-----------------
标签:range 函数 targe port 设置 tip sync lis 同步
原文地址:https://www.cnblogs.com/wuyazi/p/8856043.html