sqlalchemy的增删改查

#设置staticmethod方法后，在调用这个类的时候就不用实例化对象了
@staticmethod
@cache.memoize(20)
def getstudentinfo(user):
  
    inf= set()
    res = {user: val}
    # # 获取code的sql
    info= text(
        "select name,class,score,course_id from student
        where user = {user}.format(
            user=user))
    rows = db.session.execute(info).fetchall()
    for row in rows:
        inf.add(row['code'])

    return res

@staticmethod
def getstudentinfo(name,class,score,course_id):
 
    lis = []
　　#一次提交多个数据用list
    for r_id in course_id:
        lis.append(UserRole(name=name, score=score, course_id=course_id,
                            created_time=time.localtime(time.time())))
    db.session.add_all(lis)
    db.session.flush()  # 可以获取对应的id
 
    return lis