multiprocessing创建多进程

参考 https://zhuanlan.zhihu.com/p/410731610

方法1：

#!/usr/bin/python3
# -*- coding: UTF-8 -*-

from multiprocessing import Process 
import time
import os
def test_proc(num):
    for i in range(num):
        print('子进程运行中，i=%d, name=%s, pid=%d' %(i, __name__, os.getpid()))
        time.sleep(1)

if __name__=='__main__':
    p1 = Process(target = test_proc, name = 'test1', args=( 10, ))
    p2 = Process(target = test_proc, name = 'test2', args=( 10, ))
    p1.start()
    p2.start()
    p1.join()
    p2.join()
    

方法2：

#!/usr/bin/python3
# -*- coding: UTF-8 -*-
from multiprocessing import Process 
import time
import os
        
class A(Process):
    def __init__(self,name, num):
        super().__init__()
        self.name=name
        self.num=num
    def run(self):
        for i in range(self.num):
            print('子进程运行中，i=%d, name=%s, pid=%d' %(i, self.name, os.getpid()))
            time.sleep(1)

if __name__=='__main__':
    p1 = A('A',10)
    p2 = A('B',10)
    p1.start()
    p2.start()
    p1.join()
    p2.join()