code: def _unwrap_dict(dictionary, index_string):
      '''
      Accepts index in form of a string
      Returns final value
      Example: dictionary = {'a': {'b': {'c': 'foobar'}}}
               index_string = 'a,b,c'
               returns 'foobar'
      '''
      index = index_string.split(',')
      for k in index:
          dictionary = dictionary[k]
      return dictionarf _unwrap_dict(dictionary, index_string):
      '''
      Accepts index in form of a string
      Returns final value
      Example: dictionary = {'a': {'b': {'c': 'foobar'}}}
               index_string = 'a,b,c'
               returns 'foobar'
      '''
      index = index_string.split(',')
      for k in index:
          dictionary = dictionary[k]
      return dictionary
docs: Accepts index in form of a string
      Returns final value
      Example: dictionary = {'a': {'b': {'c': 'foobar'}}}
               index_string = 'a,b,c'
               returns 'foobar'