I reproduced the issue with python-apt 1.0.1ubuntu0.1 in Wily, and can confirm that the proposed version 1.0.1ubuntu0.1 solves the issue.
$ ubuntu-support-status Support status summary of 'wily-amd64': You have 2237 packages (85.3%) supported until July 2016 (9m) You have 4 packages (0.2%) supported until August 2016 (9m) You have 107 packages (4.1%) that can not/no-longer be downloaded You have 276 packages (10.5%) that are unsupported Run with --show-unsupported, --show-supported or --show-all to see more details $ apt list python3-apt -a Listing... Done python3-apt/wily-proposed,now 1.0.1ubuntu0.1 amd64 [installed] python3-apt/wily 1.0.1build1 amd64 ** Tags removed: verification-needed-wily ** Tags added: verification-done-wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1503979 Title: ubuntu-support-status throws exeption No date tag found (regression) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-apt/+bug/1503979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs