What does this fix exactly? (when committing fixes good to say whats broken)

So I thought Fix ShowDeprecationWarning macro is enough description, because it only fix the ShowDeprecationWarning macro which was never working. For me the changes were obviously, so I didn't add an extra comment.
In the macro ShowDeprecationWarning_func() wasn't found because the PyObjectPlus namespace was not not declared. Instead to define the namspace I decided to add it to the functions.

Ok. think I see whats happened.

ShowDeprecationWarning was written and used some years ago, since then namespace use was cleaned up, now using the macro fails.