多线程——待补充

先写个例子，后面详细补充

from multiprocessing import Process
import os
from time import sleep

def say_name(name):
    print('children process %s\'s pid is %s' % (name, os.getpid()))


if __name__ == '__main__':
    print('Parent has alredy start and pid is %s' % (os.getpid()))
    for i in range(5):
        # 引入进程，创建进程对象，传入执行函数和函数的参数
        d = Process(target=say_name, args=(i,))
        print('Process will be start')
        sleep(2)
        d.start()  # 通过start()启动进程
    d.join()  # 通过join()实现进程同步
    print('Process End.')