const {spawn} = require('child_process'); var dataToSend; const python = spawn('python3', ['-m', 'pip', 'install', '--upgrade','--quiet', '-r', '../requirements.txt'], {"cwd": "./src"}); python.stdout.on('data', function (data) { dataToSend += data.toString(); }); python.stderr.on('data', function (data) { dataToSend += data.toString(); }); python.on('close', (code) => { process.stdout.write(dataToSend.replace("undefined","")) process.exit(code) });