new_contents: from flask import Flask, abort, render_template, request, jsonify
  
  app = Flask(__name__, static_url_path='')
  app.debug = True
  
  @app.route('/')
  def index():
      msg = {'host1:8000': 'Request from host1',
             'host2:8000': 'Request from host2',
             }
      return msg[request.host]
  
  if __name__ == '__main__':
      app.run(port=8000)
  
subject: test webapps