code: def _get_option(pat: str, silent: bool = False) -> Any:
      key = _get_single_key(pat, silent)
  
      # walk the nested dict
      root, k = _get_root(key)
      return root[k]
  
imports: from __future__ import annotations
  from contextlib import ContextDecorator, contextmanager
  import re
  from typing import TYPE_CHECKING, Any, Callable, Generic, NamedTuple, cast
  import warnings
  from pandas._typing import F, T
  from pandas.util._exceptions import find_stack_level
label_desc: Use image node_id 2 for calling a global function with example usage: _get_option(pat, silent) and returns: root