AttributeError:使用flask-sqlalchemy连接到sqlite数据库时无法设置属性

最新推荐文章于 2024-03-04 20:27:56 发布

leenhem

最新推荐文章于 2024-03-04 20:27:56 发布

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Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 1060, in __repr__
    self.engine.url if self.app or current_app else None
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 943, in engine
    return self.get_engine()
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 962, in get_engine
    return connector.get_engine()
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 555, in get_engine
    options = self.get_options(sa_url, echo)
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 570, in get_options
    self._sa.apply_driver_hacks(self._app, sa_url, options)
  File "c:\coding-projects\task-master-tdd\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 914, in apply_driver_hacks
    sa_url.database = os.path.join(app.root_path, sa_url.database)
AttributeError: can't set attribute

解决方法:

SQLAlchemy自动作为Flask-SQLAlchemy的依赖项安装，其最新版本(1.4.0）引入了以下突破性的更改：

URL对象现在是一个名为tuple的不可变对象。要修改URL对象，请使用URL.set(）方法生成新的URL对象。

我只需安装以前版本的SQLAlchemy（1.3.23）就可以解决这个问题。


pip install  --upgrade sqlalchemy==1.3.23


ok