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Fix python custom ops tutorial #3299

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Merged
merged 1 commit into from
Mar 19, 2025
Merged

Fix python custom ops tutorial #3299

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5 changes: 4 additions & 1 deletion advanced_source/python_custom_ops.py
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Original file line number Diff line number Diff line change
Expand Up @@ -112,7 +112,10 @@ def crop(pic: torch.Tensor, box: Sequence[int]) -> torch.Tensor:
def _(pic, box):
channels = pic.shape[0]
x0, y0, x1, y1 = box
return pic.new_empty(channels, y1 - y0, x1 - x0)
result = pic.new_empty(y1 - y0, x1 - x0, channels).permute(2, 0, 1)
# The result should have the same metadata (shape/strides/``dtype``/device)
# as running the ``crop`` function above.
return result

######################################################################
# After this, ``crop`` now works without graph breaks:
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