MC: add comment about except
MC: add comment about except

vighneshbirodkar/scikit-image,ofgulban/scikit-image,vighneshbirodkar/scikit-image,paalge/scikit-image,rjeli/scikit-image,ofgulban/scikit-image,ofgulban/scikit-image,paalge/scikit-image,vighneshbirodkar/scikit-image,paalge/scikit-image,rjeli/scikit-image,rjeli/scikit-image