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Report only the failed imports in requires_backends #15636

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Merged
sgugger merged 1 commit into from
Feb 14, 2022
Merged

Report only the failed imports in requires_backends #15636

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6 changes: 4 additions & 2 deletions src/transformers/file_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -827,8 +827,10 @@ def requires_backends(obj, backends):
backends = [backends]

name = obj.__name__ if hasattr(obj, "__name__") else obj.__class__.__name__
if not all(BACKENDS_MAPPING[backend][0]() for backend in backends):
raise ImportError("".join([BACKENDS_MAPPING[backend][1].format(name) for backend in backends]))
checks = (BACKENDS_MAPPING[backend] for backend in backends)
failed = [msg.format(name) for available, msg in checks if not available()]
if failed:
raise ImportError("".join(failed))


class DummyObject(type):
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