server.js

const express=require('express');
const cors=require('cors')
const bodyParser=require('body-parser')
const formidable=require('formidable')
const fs=require('fs');

const { PythonShell } = require("python-shell");
const app=express();

app.use(cors());
app.use(bodyParser.urlencoded({extended:false}))
app.use(bodyParser.json());

app.use(express.static('public'));

app.get('/',(req,res)=>{
  res.send("Working")
})

app.post('/fileupload',(req,res)=>{
  console.log('Post image');
  let form=formidable.IncomingForm();
  form.parse(req,(err,fields,files)=>{
    let oldPath=files.filetoupload.path;
    console.log(__dirname);
    let newPath=__dirname+'/public/'+files.filetoupload.name;
    fs.rename(oldPath,newPath,(err)=>{
      if(err){
        throw err;
      }
      let options={
        args:[newPath]
      }
      PythonShell.run("label_image.py",options,(err,result)=>{
        if(err){
          throw err;
        }
        let category=result;
        res.json(category);
      })
    })
  })
})
const port = process.env.PORT || 8000;
app.listen(port,()=>{
  console.log("Server started on localhost://8000")
})