code: def __eq__(self, other: object) -> bool:
      if isinstance(other, _Opt):
          self_tpl = (self.default, self.rebuild, self.valid_types)
          other_tpl = (other.default, other.rebuild, other.valid_types)
          return self_tpl == other_tpl
      return NotImplemented
  
imports: from __future__ import annotations
  import sys
  import time
  import traceback
  import types
  import warnings
  from os import getenv, path
  from typing import TYPE_CHECKING, Any, Literal, NamedTuple, Union
  from sphinx.deprecation import RemovedInSphinx90Warning
  from sphinx.errors import ConfigError, ExtensionError
  from sphinx.locale import _, __
  from sphinx.util import logging
  from sphinx.util.osutil import fs_encoding
  from sphinx.util.typing import NoneType
label_desc: Use image node_id 3 for calling the _Opt obj's underlying member method code with example usage: obj.__eq__(other) and returns: NotImplemented, unknown