new_contents: # -*- coding: utf-8 -*-
  try:
      import subprocess
      from gevent import monkey
      subprocess.Popen = monkey.get_original('subprocess', 'Popen')
  except:
      pass
  
  from sina import Sina
  from sina.config import DEFAULT_CONFIG
  
  app = Sina(DEFAULT_CONFIG)
  
  # gunicorn run_gunicorn:app -b 0.0.0.0:8000 -k gevent
  # gunicorn run_gunicorn:app -b 0.0.0.0:8000
  
subject: Add gunicorn example.