old_contents: import os
  from flask import Flask, request, redirect, url_for, render_template
  from pdfkit import from_string
  from data import get_chars
  from werkzeug import secure_filename
  
  UPLOAD_FOLDER = '/tmp'
  ALLOWED_EXTENSIONS = set(['jpg', 'png'])
  
  app = Flask(__name__)
  app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
  
  @app.route("/")
  def index():
      return render_template(
          'index.html'
      )
  
  @app.route("/template")
  def template():
      html = render_template(
          'template.html',
          chars=get_chars()
      )
      pdf = from_string(html, False, css='static/template.css')
      response = make_response(pdf)
      response.headers['Content-Disposition'] = "filename=template.pdf"
      response.mimetype = 'application/pdf'
      return response
  
  def allowed_file(filename):
      return '.' in filename and \
             filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
  
  @app.route("/file-upload", methods=['POST'])
  def file_upload():
      if request.method == 'POST':
          file = request.files['file']
          if file and allowed_file(file.filename):
              filename = secure_filename(file.filename)
              file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
              # return redirect(url_for('uploaded_file',
                                      # filename=filename))
              return "save sucess"
      return "lalala"
  
  
  if __name__ == "__main__":
      app.run(debug=True)
  
new_contents: import os
  from flask import Flask
  from flask import request
  from flask import make_response
  from flask import render_template
  from pdfkit import from_string
  from data import get_chars
  from werkzeug import secure_filename
  
  UPLOAD_FOLDER = '/tmp'
  ALLOWED_EXTENSIONS = set(['jpg', 'png'])
  
  app = Flask(__name__)
  app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
  
  
  @app.route("/")
  def index():
      return render_template(
          'index.html'
      )
  
  
  @app.route("/template")
  def template():
      html = render_template(
          'template.html',
          chars=get_chars()
      )
      pdf = from_string(html, False, css='static/template.css')
      response = make_response(pdf)
      response.headers['Content-Disposition'] = "filename=template.pdf"
      response.mimetype = 'application/pdf'
      return response
  
  
  def allowed_file(filename):
      return '.' in filename and \
             filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
  
  
  @app.route("/file-upload", methods=['POST'])
  def file_upload():
      if request.method == 'POST':
          file = request.files['file']
          if file and allowed_file(file.filename):
              filename = secure_filename(file.filename)
              file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
              # return redirect(url_for('uploaded_file', filename=filename))
              return "save sucess"
      return "lalala"
  
  
  if __name__ == "__main__":
      app.run(debug=True)
  
subject: Fix make_response import error