daft.functions.list_bool_and#

def list_bool_and(list_expr: Expression) -> Expression:
    """Calculates the boolean AND of all values in a list.

    For each list:
    - Returns True if all non-null values are True
    - Returns False if any non-null value is False
    - Returns null if the list is empty or contains only null values

    Args:
        list_expr (List Expression): expression to calculate the boolean AND of.

    Returns:
        Expression (Boolean Expression): an expression with the result of the boolean AND operation.

    Examples:
        >>> import daft
        >>> from daft.functions import list_bool_and
        >>> df = daft.from_pydict({"values": [[True, True], [True, False], [None, None], []]})
        >>> df.with_column("result", list_bool_and(df["values"])).collect()
        ╭───────────────┬────────╮
        │ values        ┆ result │
        │ ---           ┆ ---    │
        │ List[Bool]    ┆ Bool   │
        ╞═══════════════╪════════╡
        │ [true, true]  ┆ true   │
        ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌┤
        │ [true, false] ┆ false  │
        ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌┤
        │ [None, None]  ┆ None   │
        ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌┤
        │ []            ┆ None   │
        ╰───────────────┴────────╯
        <BLANKLINE>
        (Showing first 4 of 4 rows)
    """
    return Expression._call_builtin_scalar_fn("list_bool_and", list_expr)