def safe_get_val(dictionary:dict, key, default=None):
    return dictionary[key] if key in dictionary.keys() else default


def results_check(results, id, text="ID"):
    if len(results) == 0:
        raise ValueError("%s %s does not exist!" % (text, id))
    elif len(results) > 1:
        raise ValueError("%s %s is not unique!" % (text, id))