stop python script nodejs

1var python_process;
2
3router.get('/start_python', function(req, res) {
4    var PythonShell = require('python-shell');
5    var pyshell = new PythonShell('general.py');
6
7    pyshell.end(function (err) {
8        if (err) {
9            console.log(err);
10        }
11    });
12    python_process = pyshell.childProcess;
13
14    res.send('Started.');
15});
16
17// this stops the process
18router.get('/stop_python', function(req, res) {
19   python_process.kill('SIGINT');
20   res.send('Stopped');
21});