> On Sep 24, 2015, at 9:30 PM, Timothy Allen <[email protected]> > wrote: > > The other day I was experimenting with the inlineCallbacks decorator in > Twisted 15.4, and occasionally when I'd typo a variable name or similar, I'd > get an "unhandled error" in the log without a traceback, which was rather > unhelpful. Eventually, I managed to produce the following test-case: > > https://gist.github.com/OptiverTimAll/43263a7a4cf5a298e8f5 > > If I run it as-is, I get the following unhelpful output: > > CRITICAL:twisted:Unhandled error in Deferred: > CRITICAL:twisted: > > If I comment out the line that redirects Twisted's logging to the standard > library's logging system, I get much more helpful output: > > Unhandled error in Deferred: > > > Traceback (most recent call last): > File "./ic-test.py", line 20, in <module> > bogus_callback() > File > "/home/timall/.virtualenvs/txfuse/lib/python2.7/site-packages/twisted/internet/defer.py", > line 1274, in unwindGenerator > return _inlineCallbacks(None, gen, Deferred()) > --- <exception caught here> --- > File > "/home/timall/.virtualenvs/txfuse/lib/python2.7/site-packages/twisted/internet/defer.py", > line 1128, in _inlineCallbacks > result = g.send(result) > File "./ic-test.py", line 17, in bogus_callback > yield does_not_exist() > exceptions.NameError: global name 'does_not_exist' is not defined > > I expected that changing the destination of log messages wouldn't change > their content, but apparently I was wrong. I got the incantation for > re-routing Twisted's logging system into the Python one by stitching together > code-snippets from > http://twistedmatrix.com/documents/current/core/howto/logger.html#starting-the-global-log-publisher > Is there some better way, or some other thing I should be doing?
Your setup sounds basically correct, and I think you've just discovered a bug here. Could you report it in the tracker? I haven't fully diagnosed it yet, but in attempting to do so, I've found a few other odd edge cases in traceback printing. -glyph _______________________________________________ Twisted-Python mailing list [email protected] http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
