How to kill a Python-Shell module process in Node.js?

Question

I am currently using the python-shell module in a Node based web interface. The issue I am having is mostly syntactical. The code below shows the generation of a python script.

var PythonShell = require('python-shell');
PythonShell.run('my_script.py' function (err) {
    if (err) throw err;
    console.log('finished');
}):

This is just an example script from here. How do I relate this to node's

var procc = require('child_process'.spawn('mongod');
procc.kill('SIGINT');

The documentation states that PythonShell instances have the following properties:

childProcess: the process instance created via child_process.spawn

But how do I acutally use this? There seems to be a lack of examples when it comes to this specific module

Hammad Ali · Accepted Answer · 2020-07-08 13:14:46Z

6

For example -

var python_process;

router.get('/start_python', function(req, res) {
    const {PythonShell} = require("python-shell");

var options = {
    pythonPath:'local python path'
  }
    var pyshell = new PythonShell('general.py');

    pyshell.end(function (err) {
        if (err) {
            console.log(err);
        }
    });
    python_process = pyshell.childProcess;

    res.send('Started.');
});

router.get('/stop_python', function(req, res) {
   python_process.kill('SIGINT');
   res.send('Stopped');
});

edited Jul 8, 2020 at 13:14

Hammad Ali

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answered Aug 20, 2017 at 0:00

Jack Yang

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2 Comments

Noah Over a year ago

is router referring to the module router?

Jack Yang Over a year ago

This is just an example to show you how to use "childProcess". You can use app or any other middleware that can accept requests.

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