class_docstr: A collection of options, a dictionary with object-like access.
  
  Normally accessed via static functions in the `tornado.options` module,
  which reference a global instance.
class_docstr_tok: ["A","collection","of","options",",","a","dictionary","with","object-like","access",".","Normally","accessed","via","static","functions","in","the","`","tornado.options","`","module",",","which","reference","a","global","instance","."]
code: def __setattr__(self, name: str, value: Any) -> None:
      name = self._normalize_name(name)
      if isinstance(self._options.get(name), _Option):
          return self._options[name].set(value)
      raise AttributeError("Unrecognized option %r" % name)
  
imports: import datetime
  import numbers
  import re
  import sys
  import os
  import textwrap
  from tornado.escape import _unicode, native_str
  from tornado.log import define_logging_options
  from tornado.util import basestring_type, exec_in
  from typing import Any, Iterator, Iterable, Tuple, Set, Dict, Callable, List, TextIO, Optional
label_desc: Use image node_id 4 for calling the OptionParser obj's underlying member method code with example usage: obj.__setattr__(name, value) and returns: self