EXCEPTION of type 'AttributeError' when using 'help' from openstack-cli

$ openstack
(openstack) set debug true
debug - was: False
now: True
(openstack) help network
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/cmd2.py", line 776, in onecmd_plus_hooks
    stop = self.onecmd(statement)
  File "/usr/lib/python2.7/dist-packages/cmd2.py", line 964, in onecmd
    stop = func(statement)
  File "/usr/lib/python2.7/dist-packages/cliff/interactive.py", line 114, in do_help
    self.default(self.parsed('help ' + arg))
AttributeError: InteractiveApp instance has no attribute 'parsed'
EXCEPTION of type 'AttributeError' occurred with message: 'InteractiveApp instance has no attribute 'parsed''

It looks like upstream cmd2 moved the parsed method from class Cmd() to class ParserManager() in 0.7.3.

git clone https://github.com/python-cmd2/cmd2.git
git checkout 0.7.2
git checkout 0.7.3

Based on upper-constraints and this being introduced in 0.7.3 of cmd2, this appears to be an issue in Pike and Queens:

Upper-constraints for stable/ocata: cmd2===0.6.9
Upper-constraints for stable/pike: cmd2===0.7.5
Upper-constraints for stable/queens: cmd2===0.7.9

Fix proposed to branch: master
Review: https://review.openstack.org/548625

Ubuntu SRU details for Pike:

[Impact]
See bug description.

[Test Case]
See bug description.

[Regression Potential]
Regression potential is minimal. This is a small one-line change that has been cherry-picked from upstream gerrit.

I've uploaded a patched version of python-cliff to Bionic (Queens) and Artful (Pike). Artful is awaiting review from the SRU team.

Hello Scott, or anyone else affected,

Accepted python-cliff into queens-proposed. The package will build now and be available in the Ubuntu Cloud Archive in a few hours, and then in the -proposed repository.

Please help us by testing this new package. To enable the -proposed repository:

  sudo add-apt-repository cloud-archive:queens-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-queens-needed to verification-queens-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-queens-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

The verification of the Stable Release Update for python-cliff has completed successfully and the package has now been released to -updates. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package python-cliff - 2.11.0-0ubuntu2~cloud0
---------------

 python-cliff (2.11.0-0ubuntu2~cloud0) xenial-queens; urgency=medium
 .
   * New update for the Ubuntu Cloud Archive.
 .
 python-cliff (2.11.0-0ubuntu2) bionic; urgency=medium
 .
   * d/p/align-parsed-call-with-cmd2-versions-0.7.3.patch: Cherry-picked
     from https://review.openstack.org/#/c/548626/ to fix AttributeError
     exception with use of cmd2 parsed() method (LP: #1751822).

python-cliff (2.11.0-0ubuntu2) bionic; urgency=medium

  * d/p/align-parsed-call-with-cmd2-versions-0.7.3.patch: Cherry-picked
    from https://review.openstack.org/#/c/548626/ to fix AttributeError
    exception with use of cmd2 parsed() method (LP: #1751822).

Hello Scott, or anyone else affected,

Accepted python-cliff into artful-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python-cliff/2.8.0-0ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-artful to verification-done-artful. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-artful. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello Scott, or anyone else affected,

Accepted python-cliff into pike-proposed. The package will build now and be available in the Ubuntu Cloud Archive in a few hours, and then in the -proposed repository.

Please help us by testing this new package. To enable the -proposed repository:

  sudo add-apt-repository cloud-archive:pike-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-pike-needed to verification-pike-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-pike-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Reviewed: https://review.openstack.org/548625
Committed: https://git.openstack.org/cgit/openstack/cliff/commit/?id=8416650128b9a1ae8c7fd1bfe2a8d1a49a9b6a0b
Submitter: Zuul
Branch: master

commit 8416650128b9a1ae8c7fd1bfe2a8d1a49a9b6a0b
Author: Corey Bryant <email address hidden>
Date: Wed Feb 28 10:49:24 2018 -0500

    Align parsed() call with cmd2 versions >= 0.7.3

    In version 0.7.3, cmd2 moved the parsed method from class Cmd()
    to class ParserManager().

    Change-Id: Ie0c057ffaeaa05c4f5e0f3599aab850245c55066
    Closes-Bug: #1751822

This bug was fixed in the package python-cliff - 2.8.0-0ubuntu1.1

---------------
python-cliff (2.8.0-0ubuntu1.1) artful; urgency=medium

  * d/gbp.conf: Create stable/pike branch.
  * d/p/align-parsed-call-with-cmd2-versions-0.7.3.patch: Cherry-picked
    from https://review.openstack.org/#/c/548627/ to fix AttributeError
    exception with use of cmd2 parsed() method (LP: #1751822).

 -- Corey Bryant <email address hidden> Tue, 17 Oct 2017 15:28:27 -0400

I've verified this is fixed in xenial-proposed. https://paste.ubuntu.com/p/hsZdjQT63W/

The verification of the Stable Release Update for python-cliff has completed successfully and the package has now been released to -updates. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package python-cliff - 2.8.0-0ubuntu1.1~cloud0
---------------

 python-cliff (2.8.0-0ubuntu1.1~cloud0) xenial-pike; urgency=medium
 .
   * New update for the Ubuntu Cloud Archive.
 .
 python-cliff (2.8.0-0ubuntu1.1) artful; urgency=medium
 .
   * d/gbp.conf: Create stable/pike branch.
   * d/p/align-parsed-call-with-cmd2-versions-0.7.3.patch: Cherry-picked
     from https://review.openstack.org/#/c/548627/ to fix AttributeError
     exception with use of cmd2 parsed() method (LP: #1751822).

This issue was fixed in the openstack/cliff 2.12.0 release.

This issue was fixed in the openstack/cliff 2.11.1 release.

This issue was fixed in the openstack/cliff 2.8.2 release.

This issue was fixed in the openstack/cliff 2.17.0 release.