pytorch

f17d7a55 - Fix exception chaining in `torch/` (#43836)

Fix exception chaining in `torch/` (#43836) Summary: ## Motivation Fixes https://github.com/pytorch/pytorch/issues/43770. ## Description of the change This PR fixes exception chaining only in files under `torch/` where appropriate. To fix exception chaining, I used either: 1. `raise new_exception from old_exception` where `new_exception` itself seems not descriptive enough to debug or `old_exception` delivers valuable information. 2. `raise new_exception from None` where raising both of `new_exception` and `old_exception` seems a bit noisy and redundant. I subjectively chose which one to use from the above options. ## List of lines containing raise in except clause: I wrote [this simple script](https://gist.github.com/akihironitta/4223c1b32404b36c1b349d70c4c93b4d) using [ast](https://docs.python.org/3.8/library/ast.html#module-ast) to list lines where `raise`ing in `except` clause. - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/jit/annotations.py#L35 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/jit/annotations.py#L150 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/jit/annotations.py#L158 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/jit/annotations.py#L231 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/jit/_trace.py#L432 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/nn/utils/prune.py#L192 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/cuda/nvtx.py#L7 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/utils/cpp_extension.py#L1537 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/utils/tensorboard/_pytorch_graph.py#L292 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/utils/data/dataloader.py#L835 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/utils/data/dataloader.py#L849 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/utils/data/dataloader.py#L856 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L186 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L189 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L424 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1279 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1283 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1356 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1388 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1391 - [ ] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_utils.py#L1412 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/codegen/random_topo_test.py#L310 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/codegen/random_topo_test.py#L329 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/codegen/random_topo_test.py#L332 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/jit_utils.py#L183 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/testing/_internal/common_nn.py#L4789 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/onnx/utils.py#L367 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/onnx/utils.py#L659 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/onnx/utils.py#L892 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/onnx/utils.py#L897 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/serialization.py#L108 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/serialization.py#L754 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/distributed/rpc/_testing/faulty_agent_backend_registry.py#L76 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/distributed/rpc/backend_registry.py#L260 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/distributed/distributed_c10d.py#L184 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/_utils_internal.py#L57 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/hub.py#L494 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/contrib/_tensorboard_vis.py#L16 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/distributions/lowrank_multivariate_normal.py#L100 - [x] https://github.com/pytorch/pytorch/blob/000739c31ad34909e64124e0d39b2f49249458e9/torch/distributions/constraint_registry.py#L142 Pull Request resolved: https://github.com/pytorch/pytorch/pull/43836 Reviewed By: ailzhang Differential Revision: D23431212 Pulled By: malfet fbshipit-source-id: 5f7f41b391164a5ad0efc06e55cd58c23408a921