sage

1dd7e8c6 - for a in "CLASS='Map|AbelianGroupMorphism|PermutationGroupMorphism|ChainComplexMorphism|SimplicialComplexMorphism';SUFFIX=" ; do eval "$a"; git --no-pager grep -l -E 'is_('$CLASS')' src/sage | xargs sed -E -i.bak 's/import is_('$CLASS')/import \1'$SUFFIX'/;/^ +/s/is_('$CLASS')[(]([^()]*([(][^()]*[)])?[^()]*)[)]/isinstance(\2, \1'$SUFFIX')/g'; done