text: #!/usr/bin/env python
  # encoding: utf-8
  """
  
  @author:nikan
  
  @file: extensions.py
  
  @time: 2018/5/14 下午3:38
  """
  
  from flask_sqlalchemy import SQLAlchemy
  from PyScraper.server.models.base import BaseMixin
  # from PyScraper.utils.multiprocessing_queue import Queue
  from queue import Queue
  db = SQLAlchemy(session_options={'autocommit': False}, model_class=BaseMixin)
  spidercls_queue = Queue()
  