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Posted to github@arrow.apache.org by "chilin0525 (via GitHub)" <gi...@apache.org> on 2026/02/01 08:32:30 UTC

[PR] GH-49108: [Python] SparseCOOTensor.__repr__ missing f-string prefix [arrow]

chilin0525 opened a new pull request, #49109:
URL: https://github.com/apache/arrow/pull/49109

   ### Rationale for this change
   
   `SparseCOOTensor.__repr__` outputs literal `{self.type}` and `{self.shape}` instead of actual values due to missing f-string prefix.
   
   ### What changes are included in this PR?
   
   Add f prefix to the string in `SparseCOOTensor.__repr__`.
   
   ### Are these changes tested?
   
   Yes, work after adding. f-string prefix:
   ```python3
   >>> import pyarrow as pa
   >>> import numpy as np
   >>> dense_tensor = np.array([[0, 1, 0], [2, 0, 3]], dtype=np.float32)
   >>> sparse_coo = pa.SparseCOOTensor.from_dense_numpy(dense_tensor)
   >>> sparse_coo
   <pyarrow.SparseCOOTensor>
   type: float
   shape: (2, 3)
   ```
   
   ### Are there any user-facing changes?
   
   a bug that caused incorrect or invalid data to be produced:
   
   ```python3
   >>> import pyarrow as pa
   >>> import numpy as np
   >>> dense_tensor = np.array([[0, 1, 0], [2, 0, 3]], dtype=np.float32)
   >>> sparse_coo = pa.SparseCOOTensor.from_dense_numpy(dense_tensor)
   >>> sparse_coo
   <pyarrow.SparseCOOTensor>
   type: {self.type}
   shape: {self.shape}
   ```
   


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Re: [PR] GH-49108: [Python] SparseCOOTensor.__repr__ missing f-string prefix [arrow]

Posted by "raulcd (via GitHub)" <gi...@apache.org>.
raulcd merged PR #49109:
URL: https://github.com/apache/arrow/pull/49109


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Re: [PR] GH-49108: [Python] SparseCOOTensor.__repr__ missing f-string prefix [arrow]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #49109:
URL: https://github.com/apache/arrow/pull/49109#issuecomment-3830616994

   :warning: GitHub issue #49108 **has been automatically assigned in GitHub** to PR creator.


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