> I don't know exactly.  I think it's not worth the effort, just be 
> careful to test docstrings if you change the code noticeably.

Right.  I think in this case I just didn't realize the effect was a large 
one as the code still passed its two tests, the comparison in the testing 
I was creating, and the formatted printing in mica.report.  I should also 
have modified the checks in the code to test against a fixed dtype or one 
from the mp_get_agascid returns instead of using the "if this is a float" 
that I reused from your code.