parameters: (self, keys, func)
docstring: Initializes the ItemHandler.
  
      Args:
        keys: a list of TF-Example keys.
        func: a function that takes as an argument a dictionary from `keys` to
          parsed Tensors.
docstring_summary: Initializes the ItemHandler.
docstring_tokens: Initializes the ItemHandler .
function: def __init__(self, keys, func):
      """Initializes the ItemHandler.
  
      Args:
        keys: a list of TF-Example keys.
        func: a function that takes as an argument a dictionary from `keys` to
          parsed Tensors.
      """
      super(ItemHandlerCallback, self).__init__(keys)
      self._func = func
function_tokens: def __init__ ( self , keys , func ) : super ( ItemHandlerCallback , self ) . __init__ ( keys ) self . _func = func