如何使用Sessionmaker查询使用烧瓶进行分页

Question

这是一个简单的练习，请按照以下说明操作，我需要使用sessionmaker对sqlalchemy进行分页...

这是main.py：

from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker 
from database_config import Post

engine = create_engine('sqlite:///posts.db') Base.metadata.bind = engine 
DBSession = sessionmaker(bind=engine) session = DBSession()

posts = session.query(Post).all() #this will give all posts i need

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这是database_config模块：

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

Base = declarative_base()

class Post(Base):
    __tablename__ = 'posts'
    id = Column(Integer, primary_key=True)
    title = Column(String(250), nullable=False)

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

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