old_contents: from flask import Flask
  
  
  app = Flask(__name__)
  
  
  if __name__ == '__main__':
      app.run(port=80, debug=True)
new_contents: from flask import Flask, make_response, request
  
  
  app = Flask(__name__)
  
  @app.route('/api/translate', methods=['POST'])
  def on_post():
      """Handles API route for English -> Pig Latin translation"""
      data = request.stream.read().decode('utf-8')
  
      if not data:
          response = make_response('Error: POST requests for translations '
                                   'must contain at least one word.')
          response.status_code = 406 # Not Acceptable
          return response
  
      elif type(data) is not str:
          response = make_response('Error: POST requests for translations must'
                                   'be provided in the "text/plain" format.')
          response.status_code = 415 # Unsupported Media Type
          return response
  
      response = make_response(data)
      response.status_code = 200 # OK
      response.content_type = 'text/plain'
      return response
  
  if __name__ == '__main__':
      app.run(port=80, debug=True)
subject: Implement translation route with request echo