old_contents: # test.py
  def application(env, start_response):
      start_response('200 OK', [('Content-Type', 'text/html')])
      return [b"Hello World from a default Nginx uWSGI Python 3.5 app in a\
              Docker container (default)"]
  
new_contents: def application(env, start_response):
      start_response('200 OK', [('Content-Type', 'text/html')])
      return [b"Hello World from a default Nginx uWSGI Python 3.5 app in a\
              Docker container (default)"]
  
subject: Clean demo code python3.5