class_docstr: 将键转化为属性的字典类型
class_docstr_tok: ["\u5c06\u952e\u8f6c\u5316\u4e3a\u5c5e\u6027\u7684\u5b57\u5178\u7c7b\u578b"]
code: def __delattr__(self, item):
      try:
          self.pop(item)
      except KeyError:
          raise AttributeError(item)
  
imports: import functools
  import inspect
  from inspect import Parameter
  import dataclasses
  from dataclasses import is_dataclass
  from copy import deepcopy
  from collections import defaultdict, OrderedDict
  from typing import Callable, List, Any, Dict, AnyStr, Union, Mapping, Sequence
  from typing import Tuple, Optional
  from time import sleep
  import os
  from contextlib import contextmanager
  from functools import wraps
  from prettytable import PrettyTable
  from pathlib import Path
  from fastNLP.core.log import logger
label_desc: Use image node_id 3 for calling the Option obj's underlying member method code with example usage: obj.__delattr__(item) without return types