Looks like there is a backport of 3.4.2 to trusty in the works tracking at bug #1348954
** Changed in: python3.4 (Ubuntu Trusty) Assignee: Clint Byrum (clint-fewbar) => (unassigned) ** Changed in: python3.4 (Ubuntu Trusty) Status: In Progress => Triaged -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to python3.4 in Ubuntu. https://bugs.launchpad.net/bugs/1382607 Title: [SRU] Backport python3.4 logging module backward incompatibility fix. Status in Python: Fix Released Status in “python3.4” package in Ubuntu: Fix Released Status in “python3.4” source package in Trusty: Triaged Status in “python3.4” source package in Utopic: Fix Released Bug description: Python 3.4 released with a backward incompatible change in the logging module. This bug has been tracked and fixed upstream in http://bugs.python.org/issue22386. Summary is that logging.getLevelName(lvl) would return an integer value for a string lvl and a string value for an integer lvl. It mapped the two representations of log levels to each other. This behavior existed in python2.6 through python3.3 but was removed in 3.4. The new behavior in 3.4 was to only map integer lvl values to strings. [Impact] Any python code that aims to be compatible with python2.6 and python3.4 must carry its own log level mappings (which may change under it because the loglevels are extensible) or access private data within the python logging module. Both approaches are fragile but thankfully upstream python 3.4 has patched this behavior so a downstream update to Trusty python3.4 would allow code to easily support 2.6 and 3.4. [Test Case] As detailed in the upstream bug you can test this easily via the interactive interpreter. Desired Behavior: >>> logging.getLevelName('INFO') 20 >>> logging.getLevelName(20) 'INFO' >>> Current Trusty Behavior: # This function call should return 20. >>> logging.getLevelName('INFO') 'Level INFO' >>> logging.getLevelName(20) 'INFO' >>> logging.getLevelName(logging.INFO) 'INFO' >>> [Regression Potential] The upstream patch is tiny and comes with a test case to track the desired behavior (upstream already had tests for the other behavior of this function). Beacuse this patch is so small and comes with new tests I think the regression potential is very small. Probably the only thing to consider is that new python3.4 code may have come to rely on this new backward incompatible behavior. But that would only be the case if code specifically looked for the mapping of 'Level %s' % 'stringlevelhere'. To manage notifications about this bug go to: https://bugs.launchpad.net/python/+bug/1382607/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp