一，进程的开启方式
利用模块开启进程
1 from multiprocessing import Process
2 import time,random
3 import os
4 def piao(name):
5 print(os.getppid(),os.getpid())
6 print('%s is piaoing' %name)
7 # time.sleep(random.randint(1,3))
8 print('%s is piao end' %name)
9 if __name__ == '__main__':
10 p1=Process(target=piao,kwargs={'name':'alex',})
11 p2=Process(target=piao,args=('wupeiqi',))
12 p3=Process(target=piao,kwargs={'name':'yuanhao',})
13 p1.start()
14 p2.start()
15 p3.start()
16 print('主进程',os.getpid())
利用类开启进程
1 from multiprocessing import Process
2 import time,random
3 import os
4 class Piao(Process):
5 def __init__(self,name):
6 super().__init__()
7 self.name=name
8 def run(self):
9 print(os.getppid(),os.getpid())
10 print('%s is piaoing' %self.name)
11 # time.sleep(random.randint(1,3))
12 print('%s is piao end' %self.name)
13 if __name__ == '__main__':
14 p1=Piao('alex')
15 p2=Piao('wupeiqi')
16 p3=Piao('yuanhao')
17
18 p1.start()
19 p2.start()
20 p3.start()
21 print('主进程',os.getpid(),os.getppid())
二，多进程
服务器端
1 from socket import *
2 from multiprocessing import Process
3 s=socket(AF_INET,SOCK_STREAM)
4 s.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) #就是它，在bind前加
5 s.bind(('127.0.0.1',8088))
6 s.listen(5)
7 def talk(conn,addr):
8 while True: #通信循环
9 try:
10 data=conn.recv(1024)
11 if not data:break
12 conn.send(data.upper())
13 except Exception:
14 break
15 conn.close()
16 if __name__ == '__main__':
17 while True:#链接循环
18 conn,addr=s.accept()
19 p=Process(target=talk,args=(conn,addr))
20 p.start()
21 s.close()
客户端
1 from socket import *
2 c=socket(AF_INET,SOCK_STREAM)
3 c.connect(('127.0.0.1',8088))
4
5 while True:
6 msg=input('>>: ').strip()
7 if not msg:continue
8 c.send(msg.encode('utf-8'))
9 data=c.recv(1024)
10 print(data.decode('utf-8'))
11 c.close()
来源：https://www.cnblogs.com/jokerbj/p/7424953.html