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fix: avoid copy argument warning in to_pandas #16917

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fix: avoid copy argument warning in to_pandas #16917

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fix: avoid `copy` argument warning in `to_pandas`
tswast May 1, 2026
76a1fda
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tswast May 4, 2026
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2 changes: 1 addition & 1 deletion packages/bigframes/bigframes/core/blocks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -848,7 +848,7 @@ def _materialize_local(
else:
raw_df = result_batches.to_pandas()
df = self._copy_index_to_pandas(raw_df)
df.set_axis(self.column_labels, axis=1, copy=False)
df.columns = self.column_labels
return df, execute_result.query_job

def split(
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6 changes: 4 additions & 2 deletions packages/bigframes/bigframes/dataframe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1743,7 +1743,8 @@ def to_pandas(
)
if query_job:
self._set_internal_query_job(query_job)
return df.set_axis(self._block.column_labels, axis=1, copy=False)
df.columns = self._block.column_labels
return df

def to_pandas_batches(
self,
Expand Down Expand Up @@ -1869,7 +1870,8 @@ def peek(
raise ValueError(
"Cannot peek efficiently when data has aggregates, joins or window functions applied. Use force=True to fully compute dataframe."
)
return maybe_result.set_axis(self._block.column_labels, axis=1, copy=False)
maybe_result.columns = self._block.column_labels
return maybe_result

def nlargest(
self,
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