polars_python::prelude

Function cum_fold_exprs

Source 
pub fn cum_fold_exprs<E>(
    acc: Expr,
    f: PlanCallback<(Series, Series), Series>,
    exprs: E,
    returns_scalar: bool,
    return_dtype: Option<DataTypeExpr>,
    include_init: bool,
) -> Expr
where
    E: AsRef<[Expr]>,
Expand description

Accumulate over multiple columns horizontally / row wise.