Function at_most_one_value_set

redis/commands/helpers.py:187–203

Checks that at most one of the values in the iterable is truthy. Args: iterable: An iterable of values to check. Returns: True if at most one value is truthy, False otherwise. Raises: Might raise an error if the values in iterable are not boolean-compatibl

(iterable: Iterable[Any])

def at_most_one_value_set(iterable: Iterable[Any]):
    """
    Checks that at most one of the values in the iterable is truthy.

    Args:
        iterable: An iterable of values to check.

    Returns:
        True if at most one value is truthy, False otherwise.

    Raises:
        Might raise an error if the values in iterable are not boolean-compatible.
        For example if the type of the values implement
        __len__ or __bool__ methods and they raise an error.
    """
    values = (bool(x) for x in iterable)
    return sum(values) <= 1