old_contents: #!/usr/bin/env python
  import cPickle as pickle
  from time import time
  from datetime import datetime
  
  from .data import ObjectStore
  from ..features.mapping import FEATURE_MAPPERS
  
  from nel import logging
  log = logging.getLogger()
  
  class Classifier(object):
      mid = 'models:classifiers'
      def __init__(self, name, mapper, model):
          self.name = name
          self.mapper = mapper
          self.model = model
  
      @classmethod
      def load(cls, name):
          dm = ObjectStore.Get(cls.mid).fetch(name)
          if not dm:
              raise Exception('No classifier for name (%s) in store', name)
          return cls(**pickle.loads(dm['data']))
  
      def save(self):
          timestamp = datetime.fromtimestamp(time()).strftime('%Y-%m-%d %H:%M:%S')
          log.info('Storing classifier model (%s)...', self.name)
          ObjectStore.Get(cls.mid).save({
              '_id': name,
              'data': pickle.dumps({
                  'name': self.name,
                  'model': self.model,
                  'mapper': self.mapper
              })
          })
  
new_contents: #!/usr/bin/env python
  import cPickle as pickle
  from time import time
  from datetime import datetime
  
  from .data import ObjectStore
  from ..features.mapping import FEATURE_MAPPERS
  
  from nel import logging
  log = logging.getLogger()
  
  class Classifier(object):
      mid = 'models:classifiers'
      def __init__(self, name, mapper, model):
          self.name = name
          self.mapper = mapper
          self.model = model
  
      @classmethod
      def load(cls, name):
          dm = ObjectStore.Get(cls.mid).fetch(name)
          if not dm:
              raise Exception('No classifier for name (%s) in store', name)
          return cls(**pickle.loads(dm['data']))
  
      def save(self):
          timestamp = datetime.fromtimestamp(time()).strftime('%Y-%m-%d %H:%M:%S')
          log.info('Storing classifier model (%s)...', self.name)
          ObjectStore.Get(self.mid).save({
              '_id':self.name,
              'data': pickle.dumps({
                  'name': self.name,
                  'model': self.model,
                  'mapper': self.mapper
              })
          })
          
  
subject: Update resolution.py