rok commented on issue #37669:
URL: https://github.com/apache/arrow/issues/37669#issuecomment-1748818894
Seems to also happen for `FixedSizeListArray`:
```python
import pyarrow as pa
inner = pa.array([float(x) for x in range(1, 7)] + [None] * 12, pa.float32())
storage = pa.FixedSizeListArray.from_arrays(inner, 6)
class TensorTyp(pa.ExtensionType):
def __arrow_ext_serialize__(self):
return b""
tensor_typ = TensorTyp(pa.list_(pa.float32(), 6), "tensor_typ")
f32_array = pa.ExtensionArray.from_storage(tensor_typ, storage)
storage.cast(tensor_typ)
```
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