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fix: replace deprecated np.split_array #2735

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Mar 19, 2024
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fix: replace deprecated np.split_array #2735

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14 changes: 13 additions & 1 deletion awswrangler/_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
import boto3
import botocore.credentials
import numpy as np
import numpy.core.numeric as _nx
import pyarrow as pa
from botocore.config import Config
from packaging import version
Expand Down Expand Up @@ -851,7 +852,18 @@ def check_schema_changes(columns_types: dict[str, str], table_input: dict[str, A
@engine.dispatch_on_engine
def split_pandas_frame(df: pd.DataFrame, splits: int) -> list[pd.DataFrame]:
"""Split a DataFrame into n chunks."""
return [sub_df for sub_df in np.array_split(df, splits) if not sub_df.empty] # type: ignore[attr-defined]
# Logic obtained from np.array_split definition
total = len(df)
each_section, extras = divmod(total, splits)
section_sizes = [0] + extras * [each_section + 1] + (splits - extras) * [each_section]
div_points = _nx.array(section_sizes, dtype=_nx.intp).cumsum() # type: ignore[attr-defined]

sub_dfs = []
for i in range(splits):
sub_df = df.iloc[div_points[i] : div_points[i + 1]]
if not sub_df.empty:
sub_dfs.append(sub_df)
return sub_dfs


@engine.dispatch_on_engine
Expand Down
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