如何创建一个通用的 JavaScript 函数，它可以运行 python 脚本并以 json 格式返回数据（如果有）？

Question

我目前能够做什么

const { spawn } = require("child_process");

exports.fetchWeatherdata = (location) => {
  console.log("DIR NAME DB" + __dirname)
  return new Promise((resolve, reject) => {
    let buf = "";
    const python = spawn("python", [
      __dirname + "/weathergetter.py",
      location.toString(),
    ]);

    python.stdout.on("data", (data) => {
      buf += data;
    });

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

    python.on("close", (code) => {
      if (code !== 0) {
        return reject(`child process died with ${code}`);
      }
      const dataToSend = JSON.parse(buf.toString().replace(/\'/g, '"'));
      return resolve(dataToSend);
    });
  });
};


//in another file
const { fetchWeatherdata } = require('../python/weather')
exports.sendData = (req, res) => {
    console.log(req.query)
    console.log(req.params)

    async function main() {
        var wea = await fetchWeatherdata(req.params.loc);
        // console.log(wea);
        res.send(wea)
    }
    main()
}

我想要达到的目标

const { spawn } = require("child_process");

exports.pythonFileRunner = (pathToFile, arguments) => {
   // some code goes here. This is where I need help
   return "output of the python file 📂"
}

//in another file
const { pythonFileRunner } = require('../python/weather')

exports.fetchWeatherdata = (location) => {
   //something like this ↓↓↓
   data = pythonFileRunner("path/to/file/main.py", location)
   return data
}

基本上，我想创建一个函数，该函数可以带或不带参数运行任何给定的 python 文件并返回其输出。
请注意：我想完成pythonFileRunner()函数中的所有async-await内容。 这个函数必须只返回输出，我可以根据我的用例修改它

如果我采取了错误的方法，请在评论中告诉我。

Answer 1

应该是基本一样的。 只需更换

    const python = spawn("python", [
      __dirname + "/weathergetter.py",
      location.toString(),
    ]);

和

    const python = spawn("python", [
      pathToFile,
      ...arguments
    ]);

Answer 2

我几乎没有修改 fetchweatherdata 函数以获得我想要的。

const { spawn } = require("child_process");

function pythonRunner(path, arguments) {
    return new Promise((resolve, reject) => {
        let buf = "";
        arguments.unshift(path)
        const python = spawn("python", arguments);
    
        python.stdout.on("data", (data) => {
          buf += data;
        });
    
        python.stderr.on("data", (data) => {
          console.error(`stderr: ${data}`);
        });
    
        python.on("close", (code) => {
          if (code !== 0) {
            return reject(`child process died with ${code}`);
          }
          const dataToSend = buf
          return resolve(dataToSend);
        });
      });
}



//in any other file
//first import the function

//how to use the function
(async () => {
  data = await pythonRunner("path/to/python/file", ["arg1", "arg2"])
  console.log(data)
})()