pipe_tasks was also changed but is not showing up here. The pull request is https://github.com/lsst/pipe_tasks/pull/206

Changes:

• Update daf_base so that PropertySet.asArray can return a PropertySet. This proved necessary for a few of the conversions.
• Update all other packages to use getScalar or getArray instead of the deprecated get on PropertySet and PropertyList
• Fix pep8 errors in a few packages and enable automatic flake8 testing; this required adding a minimal unit test in a few places
• Remove python 2 support in a few packages

All done! You already fixed and rebased the few problems found while the review as in process. 

• Thank you for adding the basic import unit tests! So much better than nothing!
• Thank you for modifying the examples too
• Not relevant to this ticket, but do you know why is the default empty list OK here? scripts.BasicSConscript.tests(pyList=[])
• I didn’t check for completeness. How did you find instances of metadata.get?

An empty list is how you tell sconsUtils to let pytest use auto detection of test files. This was necessary because pyList=None already meant something.

Thank you for the helpful review. Sorry that was so much work (possibly more work than fixing the issue).

I filed DM-14876 because the github integration (Development section) has been off for this ticket. One branch (pipe_tasks) never showed up and the list of commits and pull requests is missing a few more items.