Function mean_abs_deviation_py 

pub fn mean_abs_deviation_py(
    data: &Bound<'_, PyArray1<f64>>,
    center: Option<f64>,
) -> PyResult<f64>

Mean absolute deviation

Calculates the average absolute deviation from the mean (or specified center).

Parameters:

• data: Input data array
• center: Optional center value (default: None, uses mean)

Returns:

• Mean absolute deviation value