New submission from Thomas Ryschawy <thomasotto.rysch...@emerson.com>:
It seems to be known that in case of a Windows GUI app that isn’t connected to a console sys.stderr can be None. See the Note on http://docs.python.org/py3k/library/sys.html: Under some conditions stdin, stdout and stderr as well as the original values __stdin__, __stdout__ and __stderr__ can be None. It is usually the case for Windows GUI apps that aren’t connected to a console and Python apps started with pythonw. In combination with logging this leads to an issue similar to issue #5971. In my case sys.stderr is None and File: lib\logging\__init__.py, Class: Handler, Method: handleError raises AttributeError: 'NoneType' object has no attribute 'write'. A 'simple' solution would be to check if sys.stderr is not None. In case it is None handleError must not call traceback.print_exception() and not directly write to sys.stderr. ---------- components: Library (Lib) files: traceback.txt messages: 151462 nosy: ThomasRyschawy priority: normal severity: normal status: open title: logging.Handler.handlerError() may raise AttributeError in traceback.print_exception() type: behavior versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4 Added file: http://bugs.python.org/file24263/traceback.txt _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13807> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
