Determines if a list of values are valid DMX values (0-255).

def are_valid_values(values):
    """
    Determines if a list of values are valid DMX values (0-255).
    """
    try:
        int_values = map(int, values)
        for v in int_values:
            if (v >= 0) and (v <= 255):
                continue
            else:
                return False
    except Exception as ex:
        # print(ex)
        return False
    return True