old_contents: # -*- coding: utf-8 -*-
  
  from werkzeug.serving import run_simple
  from werkzeug.contrib.fixers import ProxyFix
  from quokka import create_app
  
  application = create_app()
  
  application.wsgi_app = ProxyFix(application.wsgi_app)
  
  """
  see this post
  http://www.onurguzel.com/how-to-run-flask-applications-with-nginx-using-gunicorn/
  """
  
  if __name__ == "__main__":
      run_simple(
          '0.0.0.0',
          5000,
          application,
          use_reloader=True,
          use_debugger=True
      )
  
new_contents: # -*- coding: utf-8 -*-
  
  from werkzeug.serving import run_simple
  from werkzeug.contrib.fixers import ProxyFix
  from quokka import create_app
  
  application = create_app()
  
  application.wsgi_app = ProxyFix(application.wsgi_app)
  
  """
  see this post
  http://www.onurguzel.com/
  how-to-run-flask-applications-with-nginx-using-gunicorn/
  """
  
  if __name__ == "__main__":
      run_simple(
          '0.0.0.0',
          5000,
          application,
          use_reloader=True,
          use_debugger=True
      )
  
subject: fix pep8