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Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/18598 ghimport-source-id: c74597e5e7437e94a43c163cee0639b20d0d0c6a Stack from [ghstack](https://github.com/ezyang/ghstack): * **#18598 Turn on F401: Unused import warning.** This was requested by someone at Facebook; this lint is turned on for Facebook by default. "Sure, why not." I had to noqa a number of imports in __init__. Hypothetically we're supposed to use __all__ in this case, but I was too lazy to fix it. Left for future work. Be careful! flake8-2 and flake8-3 behave differently with respect to import resolution for # type: comments. flake8-3 will report an import unused; flake8-2 will not. For now, I just noqa'd all these sites. All the changes were done by hand. Signed-off-by: Edward Z. Yang <ezyang@fb.com> Differential Revision: D14687478 fbshipit-source-id: 30d532381e914091aadfa0d2a5a89404819663e3
18 lines
488 B
Python
18 lines
488 B
Python
import torch
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def is_available():
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return hasattr(torch._C, "_c10d_init")
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if is_available() and not torch._C._c10d_init():
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raise RuntimeError("Failed to initialize PyTorch distributed support")
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if is_available():
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from .distributed_c10d import * # noqa: F401
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# Variables prefixed with underscore are not auto imported
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# See the comment in `distributed_c10d.py` above `_backend` on why we expose
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# this.
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from .distributed_c10d import _backend # noqa: F401
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