Function date_range 

pub fn date_range(
    start: Option<Expr>,
    end: Option<Expr>,
    interval: Option<Duration>,
    num_samples: Option<Expr>,
    closed: ClosedWindow,
) -> Result<Expr, PolarsError>

Available on crate feature dtype-date only.

Create a date range column from start, end, and interval, and expressions.