old_contents: #-*- coding:utf-8 -*-
  import logging
  logging.basicConfig(level=logging.ERROR)
  
  
  class StorageAbstractAdapter(object):
  	def __init__(self,*args,**kw):
  		pass
  	def move(self,src,dest):
  		pass
  	def copy(self,src,dest):
  		pass
  	def delete(self,src):
  		pass
  	def file_size(self,file_name):
  		pass
  	def file_hash(self,file_name):
  		pass
  	def file_info(self,file_name):
  		pass
  	def file_mime(self,file_name):
  		pass
  	def file_create_time(self,file_name):
  		pass
  	def put(self,token,file_name,**kw):
  		pass
  	def token(self,file_name,**kw):
  		pass
  	def get(self,file_name,**kw):
  		pass
  	def get_url(self,file_name,**kw):
  		pass
  	
  
  
new_contents: #-*- coding:utf-8 -*-
  import logging
  logging.basicConfig(level=logging.ERROR)
  
  
  class StorageAbstractAdapter(object):
  	r'''
  		A abatract interface class ,that provides a common interface to access it for different third party service
  
  	'''
  	def __init__(self,*args,**kw):
  		r'''
  			The init parameter is unique for different storage service
  		'''
  		pass
  	def move(self,src,dest):
  		r'''
  			the mean of the parameter may represent different means
  		'''
  		pass
  	def copy(self,src,dest):
  		pass
  	def delete(self,src):
  		pass
  	def file_size(self,file_name):
  		pass
  	def file_hash(self,file_name):
  		pass
  	def file_info(self,file_name):
  		pass
  	def file_mime(self,file_name):
  		pass
  	def file_create_time(self,file_name):
  		pass
  	def put(self,token,file_name,**kw):
  		r'''
  			**kw is different for different implmentation
  		''' 
  		pass
  	def token(self,file_name,**kw):
  		pass
  	def get(self,file_name,**kw):
  		pass
  	def get_url(self,file_name,**kw):
  		pass
  	
  
  
subject: add the note for some StorageAbstractAdapter method