tree 2bba679fe4eff201ab2e72fb28fdc6c0f067f05c
parent 159fdde9ae4d7485a1ed9c9658ecf570590df669
author Erjia Guan <erjia@fb.com> 1617401946 -0700
committer Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com> 1617402055 -0700

[DataLoader] Implement issubtype for type hints (#54299)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54299

## Feature
- Check type is a subtype of another type

Prerequisite for DataPipe tying system.

Test Plan: Imported from OSS

Reviewed By: VitalyFedyunin

Differential Revision: D27327235

Pulled By: ejguan

fbshipit-source-id: 8f50a663a86540677c9e132ac7c5216fdac46f70