Node.js child_process spawn All In One

Node.js 多线程

// const { spawn } = require('child_process');
const { spawn } = require('node:child_process');

// $ ls -al /usr 等价于
const ls = spawn('ls', ['-lh', '/usr']);

ls.stdout.on('data', (data) => {
  console.log(`stdout: ${data}`);
});

ls.stderr.on('data', (data) => {
  console.error(`stderr: ${data}`);
});

ls.on('close', (code) => {
  console.log(`child process exited with code ${code}`);
});

https://nodejs.org/api/child_process.html

How to run Python script code in Node.js?

如何在 Node.js 中运行 Python 脚本代码？

// const { spawn } = require('child_process');
const { spawn } = require('node:child_process');

// async API
async function generateJsonFile(req, res) {
  // console.log(1)
  let pyData;
  // python3 ./py-script.py Node.js ✅
  const py = spawn('python3', ['./py-script.py', 'Node.js']);
  // py3 ./py-script.py Node.js ❌ py3 alias not work ❌
  // const py = spawn('py3', ['./py-script.py', 'Node.js']);
  // const py = spawn('py3', ['./py-script.py', 'Node.js'], {
  //   stdio: 'inherit',
  //   // shell: true,
  // });
  py.stdout.on('data', data => {
    console.log(`✅buffer =`, data);
    // DataView
    pyData = data.toString();
    console.log('✅Data received from python script =', `❓` + pyData + `❓`);
  });
  py.stderr.on('data', (data) => {
    console.error(`❌stderr: ${data}`);
  });
  py.on('close', (code) => {
    console.log('

标签：Node,spawn,process,py,js,sys,flush,data	

From： https://www.cnblogs.com/xgqfrms/p/17700529.html