code: def _describe_option(
      pat: str = "", _print_desc: bool = True
  ) -> str | None:
      keys = _select_options(pat)
      if len(keys) == 0:
          raise OptionError("No such keys(s)")
  
      s = "\n".join([_build_option_description(k) for k in keys])
  
      if _print_desc:
          print(s)
          return None
      return s
  
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 4 for calling a global function with example usage: _describe_option(pat, _print_desc) and returns: s, None