Public bug reported: On up-to-date focal with python3-twisted 18.9.0-11ubuntu0.20.04.1, following https://twistedmatrix.com/documents/current/core/howto/logging.html#using- the-standard-library-logging-module:
$ python3 Python 3.8.10 (default, Nov 26 2021, 20:14:08) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import logging >>> from twisted.python import log >>> logging.basicConfig(level=logging.INFO) >>> observer = log.PythonLoggingObserver() >>> observer.start() >>> log.msg('test') Temporarily disabling observer LegacyLogObserverWrapper(<bound method PythonLoggingObserver.emit of <twisted.python.log.PythonLoggingObserver object at 0x7f962dbc1130>>) due to exception: [Failure instance: Traceback: <class 'TypeError'>: _findCaller() takes from 1 to 2 positional arguments but 3 were given <stdin>:1:<module> /usr/lib/python3/dist-packages/twisted/python/threadable.py:53:sync /usr/lib/python3/dist-packages/twisted/python/log.py:286:msg /usr/lib/python3/dist-packages/twisted/logger/_legacy.py:154:publishToNewObserver --- <exception caught here> --- /usr/lib/python3/dist-packages/twisted/logger/_observer.py:131:__call__ /usr/lib/python3/dist-packages/twisted/logger/_legacy.py:93:__call__ /usr/lib/python3/dist-packages/twisted/python/log.py:595:emit /usr/lib/python3/dist-packages/twisted/logger/_legacy.py:154:publishToNewObserver /usr/lib/python3/dist-packages/twisted/logger/_stdlib.py:115:__call__ /usr/lib/python3.8/logging/__init__.py:1512:log /usr/lib/python3.8/logging/__init__.py:1577:_log ] Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3/dist-packages/twisted/python/threadable.py", line 53, in sync return function(self, *args, **kwargs) File "/usr/lib/python3/dist-packages/twisted/python/log.py", line 286, in msg _publishNew(self._publishPublisher, actualEventDict, textFromEventDict) File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 154, in publishToNewObserver observer(eventDict) --- <exception caught here> --- File "/usr/lib/python3/dist-packages/twisted/logger/_observer.py", line 131, in __call__ observer(event) File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 93, in __call__ self.legacyObserver(event) File "/usr/lib/python3/dist-packages/twisted/python/log.py", line 595, in emit _publishNew(self._newObserver, eventDict, textFromEventDict) File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 154, in publishToNewObserver observer(eventDict) File "/usr/lib/python3/dist-packages/twisted/logger/_stdlib.py", line 115, in __call__ self.logger.log( File "/usr/lib/python3.8/logging/__init__.py", line 1512, in log self._log(level, msg, args, **kwargs) File "/usr/lib/python3.8/logging/__init__.py", line 1577, in _log fn, lno, func, sinfo = self.findCaller(stack_info, stacklevel) builtins.TypeError: _findCaller() takes from 1 to 2 positional arguments but 3 were given This is https://twistedmatrix.com/trac/ticket/9668; the fix should be a trivial backport. This caused test failures in launchpad-buildd on focal (though I may look for a workaround). ** Affects: twisted (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: twisted (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: twisted (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: twisted (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961455 Title: twisted.python.log.PythonLoggingObserver is broken on Ubuntu 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/twisted/+bug/1961455/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs