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
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https://bugs.launchpad.net/bugs/1961455
Title:
twisted.python.log.PythonLoggingObserver is broken on Ubuntu 20.04
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