def check_args(ns={}):
    if not ns:
        return {"status": False, "msg": "api args is None"}
    check_key = [
        "bill_id",
        "title",
        "user_id",
        "start_date",
        "end_date",
        "salesman",
        "client",
        "status",
    ]
    for k in check_key:
        if not ns.get(k, None):
            return f"the key is null, please check key:{k}"
        else:
            if len(ns[k]) == 0:
                return f"the len is 0, please check key:{k}"
    return ""


async def save_contract(ns={}):
    """
    保存合同
    :param ns:
    :return:
    """
    error = check_args(ns)
    if error:
        return {"status": False, "msg": error}

    db = DBPools()
    async with db.sqlorContext('kboss') as sor:
        tablename = "lease_contract"
        data = {
            "id": uuid(),
            "bill_id":ns["bill_id"],
            "title": ns["title"],
            "user_id": ns["user_id"],
            "start_date": ns["start_date"],
            "end_date": ns["end_date"],
            "salesman": ns["salesman"],
            "client": ns["client"],
            "status": ns["status"],
            "remark": ns.get("remark"),
        }
        await sor.C(tablename, data)
    return {"status": True, "msg": "save ok"}


ret = await save_contract(params_kw)
return ret