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Posted to issues@arrow.apache.org by "wjones127 (via GitHub)" <gi...@apache.org> on 2023/08/31 01:55:05 UTC

[GitHub] [arrow] wjones127 opened a new issue, #37484: [Python] Add a FixedSizeTensorScalar class

wjones127 opened a new issue, #37484:
URL: https://github.com/apache/arrow/issues/37484

   ### Describe the enhancement requested
   
   When you get a scalar off of a `FixedSizeTensorArray`, you get back a generic `ExtensionTensor`. There's not an easy way to get the tensor contained back as a numpy ndarray. It would be nice to have:
   
   ```python
   def FixedSizeTensorScalar(pa.ExtensionScalar):
       def to_numpy_ndarray(): ...
   ```
   
   Then one could do:
   
   ```python
   tensor_array[i].to_numpy_ndarray()
   ```
   
   As a workaround, I currently do:
   
   ```python
   tensor_array.to_numpy_ndarray()[i]
   ```
   
   Which isn't too bad.
   
   ### Component(s)
   
   Python


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Re: [I] [Python] Add a FixedSizeTensorScalar class [arrow]

Posted by "pitrou (via GitHub)" <gi...@apache.org>.
pitrou closed issue #37484: [Python] Add a FixedSizeTensorScalar class
URL: https://github.com/apache/arrow/issues/37484


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[GitHub] [arrow] wjones127 commented on issue #37484: [Python] Add a FixedSizeTensorScalar class

Posted by "wjones127 (via GitHub)" <gi...@apache.org>.
wjones127 commented on issue #37484:
URL: https://github.com/apache/arrow/issues/37484#issuecomment-1701535505

   > Also, another workaround would be:
   > tensor_array.slice(i, i+1).to_numpy_ndarray()[0]
   
   Yes, but that doesn't work in 12.0.0. There is a bug that was fixed in 13.0.0 where `to_numpy_ndarray()` didn't work properly on sliced tensors.


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[GitHub] [arrow] rok commented on issue #37484: [Python] Add a FixedSizeTensorScalar class

Posted by "rok (via GitHub)" <gi...@apache.org>.
rok commented on issue #37484:
URL: https://github.com/apache/arrow/issues/37484#issuecomment-1701554163

   Oh yeah, that's right.


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[GitHub] [arrow] jorisvandenbossche commented on issue #37484: [Python] Add a FixedSizeTensorScalar class

Posted by "jorisvandenbossche (via GitHub)" <gi...@apache.org>.
jorisvandenbossche commented on issue #37484:
URL: https://github.com/apache/arrow/issues/37484#issuecomment-1700410277

   Sounds good!


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[GitHub] [arrow] rok commented on issue #37484: [Python] Add a FixedSizeTensorScalar class

Posted by "rok (via GitHub)" <gi...@apache.org>.
rok commented on issue #37484:
URL: https://github.com/apache/arrow/issues/37484#issuecomment-1700774456

   I can grab this one.
   
   Also, another workaround would be:
   ```
   tensor_array.slice(i, i+1).to_numpy_ndarray()[0]
   ```


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