python对象的sqlalchemy from_statement动态属性

from sqlalchemy import create_engine, Column, Integer, String, Sequence
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, Sequence('user_id_seq'), primary_key=True)
    name = Column(String(50))
    age = Column(Integer)

engine = create_engine('sqlite:///users.db')
Base.metadata.create_all(engine)

Session = sessionmaker(bind=engine)
session = Session()

# 使用from_statement方法创建动态属性
stmt = "SELECT id, name, age FROM users WHERE name=:name"
result = session.query(User).from_statement(stmt).params(name='John').first()

# 访问动态属性
print(result.id)
print(result.name)
print(result.age)