Python concurrent programming Multi-process (i): Process open mode & multi-process

First, the way the process is opened

Using modules to open processes

1  fromMultiprocessingImportProcess2 ImportTime,random3 ImportOS4 defPiao (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__':TenP1=process (target=piao,kwargs={'name':'Alex',}) OneP2=process (target=piao,args= ('Wupeiqi',)) AP3=process (target=piao,kwargs={'name':'Yuanhao',}) - P1.start () - P2.start () the P3.start () -     Print('Main Process', Os.getpid ())

Using classes to open processes

1  fromMultiprocessingImportProcess2 ImportTime,random3 ImportOS4 classPiao (Process):5     def __init__(self,name):6Super ().__init__()7Self.name=name8     defRun (self):9         Print(Os.getppid (), Os.getpid ())Ten         Print('%s is piaoing'%self.name) One         #Time.sleep (Random.randint (1,3)) A         Print('%s is Piao end'%self.name) - if __name__=='__main__': -P1=piao ('Alex') theP2=piao ('Wupeiqi') -P3=piao ('Yuanhao') -  - P1.start () + P2.start () - P3.start () +     Print('Main Process', Os.getpid (), Os.getppid ())

Two, multi-process

Server-side

1  fromSocketImport*2  fromMultiprocessingImportProcess3s=socket (af_inet,sock_stream)4S.setsockopt (sol_socket,so_reuseaddr,1)#That 's it, in front of BIND plus5S.bind (('127.0.0.1', 8088))6S.listen (5)7 defTalk (conn,addr):8      whileTrue:#Communication Cycle9         Try:TenDATA=CONN.RECV (1024) One             if  notData Break A Conn.send (Data.upper ()) -         exceptException: -              Break the conn.close () - if __name__=='__main__': -      whileTrue:#Link Loops -Conn,addr=s.accept () +P=process (target=talk,args=(CONN,ADDR)) - P.start () +S.close ()

Client

1  fromSocketImport*2C=socket (af_inet,sock_stream)3C.connect (('127.0.0.1', 8088))4 5  whileTrue:6Msg=input ('>>:'). Strip ()7     if  notMsgContinue8C.send (Msg.encode ('Utf-8'))9DATA=C.RECV (1024)Ten     Print(Data.decode ('Utf-8')) OneC.close ()

Python concurrent programming Multi-process (i): Process open mode & multi-process