多进程

code

import os
from multiprocessing import Process
 
 
class MyProcess(Process):
    def __init__(self,name):
        super().__init__()
        self.name=name
    def run(self):
        print(os.getpid())
        print('%s 正在和女主播聊天' %self.name)
 
 
p1=MyProcess('wupeiqi')
p2=MyProcess('yuanhao')
p3=MyProcess('nezha')
 
 
p1.start() # start会自动调用run,p2.run()
p2.start()
p3.start()
 
 
p1.join()
p2.join()
p3.join()
 
 
print(os.getpid())
print('主线程')
 

outputs

macname@MacdeMacBook-Pro py % python3 cccccc.py
57134
wupeiqi 正在和女主播聊天
57135
yuanhao 正在和女主播聊天
57136
nezha 正在和女主播聊天
57133
主线程
macname@MacdeMacBook-Pro py %

 

code

import os
import time
import random
from multiprocessing import Process
 
 
def work(n):
    print('%s: %s is running' %(n,os.getpid()))
    time.sleep(random.random())
    print('%s:%s is done' %(n,os.getpid()))
 
 
if __name__ == '__main__':
    for i in range(3):
        p=Process(target=work,args=(i,))
        p.start()

outputs

macname@MacdeMacBook-Pro py % python3 cccccc.py
0: 57174 is running
1: 57175 is running
2: 57176 is running
0:57174 is done
1:57175 is done
2:57176 is done
macname@MacdeMacBook-Pro py %