When adding optional spkgs to Sage, it is necessary to go through the Python interface file and put #optional on every single line of every single doctest, to indicate that those doctests should not be run.

It would be nice to be able to put #optional at, say, the top of the file, or in the docstring for the module or class, and then have that imply that every doctest within is optional.

CC: @mezzarobba

Component: doctest framework

Reviewer: Jeroen Demeyer

Issue created by migration from https://trac.sagemath.org/ticket/3260