sqlalchemy，如果不存在则创建一个sqlite数据库 [英] sqlalchemy,creating an sqlite database if it doesn't exist

问题描述

我正在试用 sqlalchemy，我正在使用此连接字符串连接到我的数据库

I am trying out sqlalchemy and i am using this connection string to connect to my databases

engine = create_engine('sqlite:///C:\\sqlitedbs\\database.db')

如果应该获取数据库文件的目录中不存在sqlalchemy 数据库，sqlalchemy 是否会为您创建一个sqlite 数据库?.

Does sqlalchemy create an sqlite database for you if one is not already present in a directory it was supposed to fetch the database file?.

推荐答案

是的，sqlalchemy 确实为您创建了一个数据库.我使用此代码在 Windows 上确认了它

Yes,sqlalchemy does create a database for you.I confirmed it on windows using this code

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

engine = create_engine('sqlite:///C:\\sqlitedbs\\school.db', echo=True)
Base = declarative_base()


class School(Base):

    __tablename__ = "woot"

    id = Column(Integer, primary_key=True)
    name = Column(String)  


    def __init__(self, name):

        self.name = name    


Base.metadata.create_all(engine)

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