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Warn if torchvision imported from repo root #2759

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Merged
merged 3 commits into from
Oct 12, 2020
Merged

Warn if torchvision imported from repo root #2759

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e72c037
Warn if torchvision imported from repo root
jamt9000 Oct 6, 2020
a5c92c3
Only warn if ops are missing
jamt9000 Oct 11, 2020
bff8a52
Merge branch 'master' of https://github.com/pytorch/vision into impor…
jamt9000 Oct 11, 2020
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9 changes: 9 additions & 0 deletions torchvision/__init__.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import warnings
import os

from .extension import _HAS_OPS

Expand All @@ -16,6 +17,14 @@
except ImportError:
pass

# Check if torchvision is being imported within the root folder
if (not _HAS_OPS and os.path.dirname(os.path.realpath(__file__)) ==
os.path.join(os.path.realpath(os.getcwd()), 'torchvision')):
message = ('You are importing torchvision within its own root folder ({}). '
'This is not expected to work and may give errors. Please exit the '
'torchvision project source and relaunch your python interpreter.')
warnings.warn(message.format(os.getcwd()))

_image_backend = 'PIL'

_video_backend = "pyav"
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