nodejs代替python,NodeJS派生的Python进程Python的process.send（）的替代方案？

I&＃39;m forking a Python script with NodeJS and when forked, by default, NodeJS create an IPC between this new process and the parent.

With NodeJS, to send message from a child to the parent I do process.send({msg : &＃39;toto&＃39;})

How can I do that with Python ?

解决方案

Ok I found it, finally is quite easy. It&＃39;s only about writing on the right file descriptor.

On the NodeJS side parameter, spawn your script like that :

var child &＃61; child_process.spawn(&＃39;python&＃39;, [&＃39;hello.py&＃39;], {

stdio:[null, null, null, &＃39;ipc&＃39;]

});

child.on(&＃39;message&＃39;, function(message) {

console.log(&＃39;Received message...&＃39;);

console.log(message);

});

As the &＃39;ipc&＃39; channel is the 4rd parameter, you will have to write on the filedescriptor 3.

On the Python side :

import os

os.write(3, &＃39;{"dt" : "This is a test"}\n&＃39;, "utf8")

Done. You will receive the message on the child.on(&＃39;message&＃39; callback.

Cheers !