json mode and run method

[Olmer1st]

Is it possible to use PythonShell.run together with mode:JSON?
What is correct options structure?

[extrabacon]

Simply set options using the second argument, like so:

PythonShell.run('script.py', { mode: 'json' });

[Olmer1st]

Yes. Ok. But how to transfer message?

[extrabacon]

Can you clarify your question? What are you struggling with exactly?

Basically, run will return an instance which you can use to send and receive messages.

var python = PythonShell.run('script.py', { mode: 'json' });
// send a message
python.send({ hello: 'world' });
// receive a message from Python
python.on('message', function (message) {
  // handle message sent from Python
}

On the Python side, you simply read from stdin and write to stdout.

# send a JSON message to node
print json.dumps(obj)
# receive messages
for message in sys.stdin:
  # handle message sent from node

[Olmer1st]

I want to use this example:
PythonShell.run('my_script.py', options, function (err, results) {
if (err) throw err;
// results is an array consisting of messages collected during execution
console.log('results: %j', results);
});

this example work only with args.

[Almenon]

Still having trouble? If not I'll close this.