8f2d495f4c7b removed the default under the assumption the defaults from
shelve.py were being used, but they weren't because obsshelve.py does not
Let's define the default separately here as the next-best option.
Dupe of D1054 ?
I think the tests still fail with this change (I tried the same change myself). Please ensure you've run the tests. D1054 in the fix I came up with after trying this.
Yes, they do -- I noticed shortly after sending. Meant to abandon after you sent D1054.