k_mul():  Heh -- I checked in two fixes for the last problem.  Only keep the good one <wink>.  Also checked in a test-aid by mistake.
k_mul():  Heh -- I checked in two fixes for the last problem.  Only keep
the good one <wink>.  Also checked in a test-aid by mistake.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator