Communication (pipeline) between python3 process

Interprocess communication (IPC) Second way: pipe (not recommended, you can understand), can cause data unsafe situation, we will talk later Why bring data insecurity problems.

# Coding: UTF-8 
from multiprocessing Import Process, Pipe 


DEF FUNC (conn2): 
    conn2.send ( " I am a child process. " )
     Print ( " message from the parent process: " , conn2.recv ()) 
    conn2.close () 


IF  the __name__ == ' __main__ ' : 
    , conn1,, conn2 = pipe ()   # create a channel to get the pipe ends, duplex communication mode, both sides can send and receive messages 
    p = Process (target = func, args = ( conn2,))   # Plug one end of the pipe to the child process 
    p.start ()   # open a child process 
    Print ( "Message from the child process: " , conn1.recv ())   # primary process to accept messages from the child process 
    conn1.send ( " I am the Lord process. " )   # Primary process to send a message to the child 
    conn1.close () 


# from news of the child process: I was the child. 
# messages from the parent process: I am the Lord process.