>>>fromurllib.errorimportHTTPError>>>x=HTTPError("url",405,"METHOD NOT ALLOWED",None,None)>>>assertgetattr(x,"__notes__", ())== ()Traceback (mostrecentcalllast):File"<stdin>",line1,in<module>File"/home/vinmic/repos/cpython/Lib/tempfile.py",line477,in__getattr__file=self.__dict__['file']~~~~~~~~~~~~~^^^^^^^^KeyError:'file'

Python 3.12.0a1+ (heads/main:bded5edd9a, Oct 27 2022, 19:23:58) [GCC 11.3.0] on linux

fromloggingimportgetLoggerfromurllib.errorimportHTTPErrortry:raiseHTTPError("url",405,"METHOD NOT ALLOWED",None,None)exceptException:getLogger().exception("Ooops")

--- Logging error ---Traceback (most recent call last):  File "/home/vinmic/repos/cpython/../test_trio/test_trio.py", line 6, in <module>    raise HTTPError("url", 405, "METHOD NOT ALLOWED", None, None)urllib.error.HTTPError: HTTP Error 405: METHOD NOT ALLOWEDDuring handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1160, in emit    msg = self.format(record)          ^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 999, in format    return fmt.format(record)           ^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 711, in format    record.exc_text = self.formatException(record.exc_info)                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 661, in formatException    traceback.print_exception(ei[0], ei[1], tb, None, sio)  File "/home/vinmic/repos/cpython/Lib/traceback.py", line 124, in print_exception    te = TracebackException(type(value), value, tb, limit=limit, compact=True)         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/traceback.py", line 697, in __init__    self.__notes__ = getattr(exc_value, '__notes__', None)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/tempfile.py", line 477, in __getattr__    file = self.__dict__['file']           ~~~~~~~~~~~~~^^^^^^^^KeyError: 'file'During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/home/vinmic/repos/cpython/../test_trio/test_trio.py", line 8, in <module>    getLogger().exception("Ooops")  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1574, in exception    self.error(msg, *args, exc_info=exc_info, **kwargs)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1568, in error    self._log(ERROR, msg, args, **kwargs)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1684, in _log    self.handle(record)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1700, in handle    self.callHandlers(record)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1770, in callHandlers    lastResort.handle(record)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1028, in handle    self.emit(record)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1168, in emit    self.handleError(record)  File "/home/vinmic/repos/cpython/Lib/logging/__init__.py", line 1082, in handleError    traceback.print_exception(t, v, tb, None, sys.stderr)  File "/home/vinmic/repos/cpython/Lib/traceback.py", line 124, in print_exception    te = TracebackException(type(value), value, tb, limit=limit, compact=True)         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/traceback.py", line 763, in __init__    context = TracebackException(              ^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/traceback.py", line 697, in __init__    self.__notes__ = getattr(exc_value, '__notes__', None)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/vinmic/repos/cpython/Lib/tempfile.py", line 477, in __getattr__    file = self.__dict__['file']           ~~~~~~~~~~~~~^^^^^^^^KeyError: 'file'

diff --git a/Lib/traceback.py b/Lib/traceback.pyindex 6270100348..a9c15d59be 100644--- a/Lib/traceback.py+++ b/Lib/traceback.py@@ -694,7 +694,10 @@ def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,         # Capture now to permit freeing resources: only complication is in the         # unofficial API _format_final_exc_line         self._str = _safe_string(exc_value, 'exception')-        self.__notes__ = getattr(exc_value, '__notes__', None)+        try:+            self.__notes__ = getattr(exc_value, '__notes__', None)+        except Exception:+            self.__notes__ = None          if exc_type and issubclass(exc_type, SyntaxError):             # Handle SyntaxError's specially