如何遍历ponyorm实体对象

from pony.orm import *
from your_module import db  # 假设你的实体对象定义在名为db的模块中

class MyEntity(db.Entity):
    id = PrimaryKey(int, auto=True)
    name = Required(str)
    # 其他属性...

db.bind(provider='sqlite', filename='database.sqlite', create_db=True)
db.generate_mapping(create_tables=True)

with db_session:
    entities = select(e for e in MyEntity)[:]  # 获取所有实体对象
    for entity in entities:
        print(entity.id, entity.name)