pytorch

a36e6468 - [pytorch][codegen] simplify python signature creation logic (#47977)

[pytorch][codegen] simplify python signature creation logic (#47977) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47977 Avoid calling CppSignatureGroup api - python signature shouldn't depend on cpp signature. Still use cpp.group_arguments() to group TensorOptions. Confirmed byte-for-byte compatible with the old codegen: ``` Run it before and after this PR: .jenkins/pytorch/codegen-test.sh <baseline_output_dir> .jenkins/pytorch/codegen-test.sh <test_output_dir> Then run diff to compare the generated files: diff -Naur <baseline_output_dir> <test_output_dir> ``` Test Plan: Imported from OSS Reviewed By: ezyang Differential Revision: D24976334 Pulled By: ljk53 fbshipit-source-id: 5df5a7bbfd2b8cb460153e5bea4d91e65f716390