Sqlalchemy group do我如何知道哪个值属于哪个组？

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

# 创建数据库连接
engine = create_engine('数据库连接字符串')
Session = sessionmaker(bind=engine)
session = Session()

# 定义数据表对应的模型
class MyTable(Base):
    __tablename__ = 'my_table'
    id = Column(Integer, primary_key=True)
    group_id = Column(Integer)
    value = Column(String)

# 执行分组查询
result = session.query(MyTable.group_id, MyTable.value).group_by(MyTable.group_id).all()

# 遍历结果集并输出每个值所属的组
for group_id, value in result:
    print(f'值 {value} 属于组 {group_id}')