pytorch

cf45d65f - Clean up some type annotations in test/jit/...../test_class_type.py (#50156)

Clean up some type annotations in test/jit/...../test_class_type.py (#50156) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/50156 Upgrades type annotations from Python2 to Python3 Test Plan: Sandcastle tests Reviewed By: xush6528 Differential Revision: D25720035 fbshipit-source-id: 7e1aec34b21f3c9a3e8db9578258d99ffb87e6d4