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⚡️ Speed up function _sample by 21% #45

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⚡️ Speed up function _sample by 21% #45

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11 changes: 9 additions & 2 deletions datacompy/fugue.py
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Original file line number Diff line number Diff line change
Expand Up @@ -928,9 +928,16 @@ def _aggregate_stats(


def _sample(df: pd.DataFrame, sample_count: int) -> pd.DataFrame:
if len(df) <= sample_count:
df_len = len(df)
if df_len <= sample_count:
if (
isinstance(df.index, pd.RangeIndex)
and df.index.start == 0
and df.index.step == 1
):
return df
return df.reset_index(drop=True)
return df.sample(n=sample_count, random_state=0).reset_index(drop=True)
return df.sample(n=sample_count, random_state=0, ignore_index=True)


class _StrictSchemaError(Exception):
Expand Down