grabber.js

var spawn  = require('child_process').spawn,
    reader = spawn('python', ['uidgrabber.py']);
var util   = require('util');
console.log("uidgrabber running pid: " + reader.pid);
reader.stdout.on('data', function (data) {
  console.log('stdout: ' + data);
  var data = data.toString();
  data = data.replace(/\u001b\[\d{0,2}m/g, ''); // Remove ANSI colors.
  var uid = /UID: (.+)/.exec(data);
  if (uid) {
    uid = uid[1];
    lastUID = uid;
    console.log("UID: " + uid);
  }
});
reader.stdout.on('end', function (data) {
  console.log('stdout end: ' + data);
});
reader.stderr.on('data', function (data) {
  console.log('stderr: ' + data);
});

reader.on('exit', function (code) {
  console.log('uidgrabber process exited with code ' + code);
});