danepitkin commented on PR #43729:
URL: https://github.com/apache/arrow/pull/43729#issuecomment-2313744343
Thanks for the second round of feedback! I will address all your comments.
The only thing that doesn't work is `pa.interchange.from_dataframe`. It ends up
hitting an Array func that asserts on CPU.
```
pyarrow/interchange/from_dataframe.py:113: in from_dataframe
return _from_dataframe(df.__dataframe__(allow_copy=allow_copy),
pyarrow/interchange/from_dataframe.py:136: in _from_dataframe
batch = protocol_df_chunk_to_pyarrow(chunk, allow_copy)
pyarrow/interchange/from_dataframe.py:182: in protocol_df_chunk_to_pyarrow
columns[name] = column_to_array(col, allow_copy)
pyarrow/interchange/from_dataframe.py:216: in column_to_array
col.describe_null,
pyarrow/interchange/column.py:376: in describe_null
if self.null_count == 0:
pyarrow/interchange/column.py:388: in null_count
arrow_null_count = self._col.null_count
pyarrow/array.pxi:1196: in pyarrow.lib.Array.null_count.__get__
self._assert_cpu()
```
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