class_docstr: An immutable and hashable dictionary that contains all the parameter
  values for a dataset.
class_docstr_tok: ["An","immutable","and","hashable","dictionary","that","contains","all","the","parameter","values","for","a","dataset","."]
code: def __len__(self) -> int:
      return len(self.__data)
  
file_path: pennylane/pennylane/data/data_manager/params.py
imports: import enum
  import typing
  from functools import lru_cache
  from typing import Any, Dict, FrozenSet, Iterable, List, Tuple, Union
label_desc: Use image node_id 4 for calling the Description obj's underlying member method code with example usage: obj.__len__() and returns: len