040000 tree 98f896d9705da092845c6d924f406a77ce580394	re.alg.match
040000 tree 20e0110ef0c8c9c85761684bb66cda1de628977d	re.alg.replace
040000 tree 62277a7676d62e22a651ed950b0f44048d4afd4c	re.alg.search
040000 tree 3b6b0e6627e5b8492f5920ca783ef97de29b12b6	re.except