antspy commented on issue #46073:
URL: https://github.com/apache/arrow/issues/46073#issuecomment-2791691664
Thank you for your answer!
Any sort of dataframe works - for example:
```python
import polars as pl
@router.get('/df')
def df() -> Response:
"""Returns a sample polars dataframe in ipc format."""
...
buffer = pl.Dataframe({'test': ['a', 'b', 'c']}).write_ipc(None,
compression='uncompressed')
buffer.seek(0)
return Response(
buffer.getvalue(),
media_type='application/octet-stream',
headers={'Content-Type': 'application/octet-stream'},
)
```
This results in the same error. I have attached the downloaded file, but as
a stream of bytes it should be the same as whatrever `buffer =
pl.Dataframe({'test': ['a', 'b', 'c']}).write_ipc(None,
compression='uncompressed')` returns.
(I had to save the file with `.txt` extension otherwise github would not
allow me to upload it. Just remove the `.txt` extension, the bytes themselves
should be correct).
[download.txt](https://github.com/user-attachments/files/19679093/download.txt)
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