如何在sqlalchemy会话查询中加入？

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

Base = declarative_base()

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

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

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

# 在查询中添加条件
users = session.query(User).filter(User.age > 18)

users = session.query(User).filter_by(age=18)

from sqlalchemy import func

users = session.query(User).group_by(User.age).having(func.count(User.id) > 1)