开启多进程的方式

第一种：创建Process对象

import os,time
from multiprocessing import Process
def func(arg1,arg2):
    print("*"*arg1)
    # print("进程号:",os.getpid())
    # print("父进程:",os.getppid())
    time.sleep(0.01)
    print("="*arg2)

if __name__ == '__main__':
    p_lst = []
    for i in range(1,11):
        p = Process(target=func,args=(10*i,20*i))
        p_lst.append(p)
        p.start()
    [p.join() for p in p_lst]
    print("game over")

第二种：创建自定义类并继承Process类，必须实现run方法，进程启动自动调用run方法

import os
from multiprocessing import Process
class MyProcess(Process):
    def __init__(self,arg1,arg2):
        super().__init__()
        self.arg1 = arg1
        self.arg2 = arg2
    def run(self):
        print(os.getpid())
if __name__ == '__main__':
    p1 = MyProcess(1,2)
    p1.start()
    p2 = MyProcess(3,4)
    p2.start()
    print("主进程:",os.getpid())