polars_python::map::dataframe

Function apply_lambda_with_rows_output

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