pytorch

564de515 - Add an iterator to Block. (#37542)

Add an iterator to Block. (#37542) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/37542 Differential Revision: D21314421 Pulled By: resistor fbshipit-source-id: e54d7a8a5c9c1186be59f69b5b8af030fc054b32