polars_python::map::dataframe

Function apply_lambda_with_rows_output

Source 
pub fn apply_lambda_with_rows_output(
    df: &DataFrame,
    py: Python<'_>,
    lambda: Bound<'_, PyAny>,
    init_null_count: usize,
    first_value: Row<'static>,
    inference_size: usize,
) -> PolarsResult<DataFrame>