code: def root():
      return render_template("up.html")
  
file_path: deep-learning-for-image-processing/deploying_service/deploying_pytorch/pytorch_flask_service/main.py
imports: import os
  import io
  import json
  import torch
  import torchvision.transforms
  from PIL import Image
  from flask import Flask, jsonify, request, render_template
  from flask_cors import CORS
  from model import MobileNetV2
label_desc: Use image node_id 4 for calling a global function with example usage: root() and returns: render_template