old_contents: import os
  import json
  import re
  import codecs
  from utils import stdout_logger as logger
  
  
  class BeerList:
      def __init__(self):
          self.__items = []
          self.__attrs = ('abv', 'alcohol', 'name', '^volume$', '^price$', 'sellstart',
                          'score', 'url', 'href', '^type$')
  
      def add(self, b):
          if not b or len(b.keys()) < 0:
              return
  
          self.__items.append({
              k: v for k, v in b.iteritems()
              if any([a for a in self.__attrs if any(re.findall(a, k.lower()))])
          })
  
      def save(self):
          filename = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) + '/beers.json'
          with codecs.open(filename, 'w', 'utf-8') as file:
              logger.info('write', 'to ' + filename)
              file.truncate()
              file.write(unicode(json.dumps(self.__items, indent=2, ensure_ascii=False)))
  
new_contents: import os
  import json
  import re
  import codecs
  from utils import stdout_logger as logger
  
  
  class BeerList:
      def __init__(self):
          self.__items = []
          self.__include_keys = ('abv', 'alcohol', 'name', '^volume$', '^price$',  'score',
                                 'url', 'href', '^type$')
  
      def add(self, b):
          if not b or len(b.keys()) < 0:
              return
  
          self.__items.append({
              k: v for k, v in b.iteritems()
              if any([a for a in self.__include_keys if any(re.findall(a, k.lower()))])
          })
  
      def save(self):
          filename = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) + '/beers.json'
          with codecs.open(filename, 'w', 'utf-8') as file:
              logger.info('write', 'to ' + filename)
              file.truncate()
              file.write(unicode(json.dumps(self.__items, indent=2, ensure_ascii=False)))
  
subject: update data keys