title: Having trouble with jsonify in Flask
body: <p>I am fairly new to Flask and am currently working on a project whose goal is to transcribe mp3 files into JSON. I decided to attempt to use Flask, but it's been more challenging than I thought.</p>
  <p>As of right now, I am able to display a example JSON file in one of my html pages, but I have not been able to format it. I looked at some previous answers that told me to use jsonify, but it hasn't worked apparently. If you guys could give me a hand, any kind of comment would be really apreciated. Here is my code:</p>
  <pre><code>from flask import Flask, render_template, url_for, request, redirect, json, jsonify
  import json
  import os
  from pathlib import Path
  
  app = Flask(__name__)
  
  @app.route('/')
  def index():
      return render_template('index.html')
  
  @app.route('/upload', methods=['POST'])
  def upload():
      file = request.files['inputFile']
      if Path(file.filename).suffix == '.mp3':
          filename = os.path.join(app.static_folder, 'data', 'json_test.json')
          with open(filename) as json_test:
              data = json.load(json_test)
          return render_template('index2.html', data=data)
      else:
          return render_template('erro.html')
  
  if __name__ == &quot;__main__&quot;:
      app.run(debug=True)
  </code></pre>