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fix: tensor equals type raises exception by JohannesMessner · Pull Request #1739 · docarray/docarray · GitHub

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fix: tensor equals type raises exception #1739

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Merged
JoanFM merged 4 commits into from
Jul 31, 2023
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fix: tensor equals type raises exception #1739

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b5f590e
fix: equality between and abstracttensor and type
JohannesMessner Jul 31, 2023
6dbcaa7
test: add test for this case
JohannesMessner Jul 31, 2023
b363381
test: add comment to test
JohannesMessner Jul 31, 2023
55ba014
fix: comparison of mro's
JohannesMessner Jul 31, 2023
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10 changes: 6 additions & 4 deletions docarray/typing/tensor/abstract_tensor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,8 +59,8 @@ class _ParametrizedMeta(type):

def _equals_special_case(cls, other):
is_type = isinstance(other, type)
is_tensor = is_type and AbstractTensor in other.mro()
same_parents = is_tensor and cls.mro()[1:] == other.mro()[1:]
is_tensor = is_type and AbstractTensor in other.__mro__
same_parents = is_tensor and cls.__mro__[1:] == other.__mro__[1:]

subclass_target_shape = getattr(other, '__docarray_target_shape__', False)
self_target_shape = getattr(cls, '__docarray_target_shape__', False)
Expand Down Expand Up @@ -92,9 +92,11 @@ def __instancecheck__(cls, instance):
return False
return any(
safe_issubclass(candidate, _cls.__unparametrizedcls__)
for candidate in type(instance).mro()
for candidate in type(instance).__mro__
)
return any(issubclass(candidate, cls) for candidate in type(instance).mro())
return any(
issubclass(candidate, cls) for candidate in type(instance).__mro__

JoanFM Jul 31, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

us safe version of is_subclass please

JohannesMessner Jul 31, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

i am not sure if we want that here. This implements the "normal" isinstance() call, so i don't think it should work with non-class inputs. For example, the following also raises an exception:

isinstance(3, List[int])
TypeError: Subscripted generics cannot be used with class and instance checks

So I would not catch such things here
)
return super().__instancecheck__(instance)

def __eq__(cls, other):
Expand Down
5 changes: 5 additions & 0 deletions tests/units/typing/tensor/test_tensor.py
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Expand Up @@ -41,3 +41,8 @@ class MyTensorDoc(BaseDoc):
assert isinstance(doc.tensor, TensorFlowTensor)
assert isinstance(doc.tensor.tensor, tf.Tensor)
assert tnp.allclose(doc.tensor.tensor, tf.zeros((1000, 2)))


def test_equals_type():
# see https://github.com/docarray/docarray/pull/1739
assert not (TorchTensor == type)
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