old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from .conf import settings
  
  def Db(*args, **kwarg):
      _import = settings.OPPS_DB_ENGINE.split('.')[-1]
      _from = u".".join(settings.OPPS_DB_ENGINE.split('.')[:-1])
      call = getattr(__import__(_from, fromlist=[_import]), _import)
      return call(*args)
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from .conf import settings
  
  
  def Db(*args, **kwarg):
      _import = settings.OPPS_DB_ENGINE.split('.')[-1]
      _from = u".".join(settings.OPPS_DB_ENGINE.split('.')[:-1])
      call = getattr(__import__(_from, fromlist=[_import]), _import)
      return call(*args)
  
subject: Fix pep8, opps/db/__init__.py:5:1: E302 expected 2 blank lines, found 1