flask 如何批量提交数据库中

@admin.route('/abc', methods=['GET','POST'])
def abc():
    abc = {'username': '456', 'email': '456@163.com', 'fname': '789', 'status': '1'}, {'username': '123', 'email': '456@163.com', 'fname': '789', 'status': '1'}

flask 如何批量提交数据库中
谢谢！！

case = []
    for i in data: 
        username = i['username'] 
        email = i['email'] 

        obj = User(username=username,email=email) 
        case.append(obj)

网上找的答案。