Question

这显示在我的 vs-studio 终端中：

>>> from app import db #this command is running successful.
>>> db.create_all() # this command not running.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 1039, in create_all
    self._execute_for_all_tables(app, bind, 'create_all')

  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 1031, in _execute_for_all_tables
    op(bind=self.get_engine(app, bind), **extra)

  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 962, in get_engine
    return connector.get_engine()

  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 555, in get_engine
    options = self.get_options(sa_url, echo)

  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 570, in get_options
    self._sa.apply_driver_hacks(self._app, sa_url, options)

  File "D:\Python\Practice\Flask\env\lib\site-packages\flask_sqlalchemy\__init__.py", line 883, in apply_driver_hacks
    if sa_url.drivername.startswith('mysql'):
AttributeError: 'bool' object has no attribute 'drivername'

Answer 1

在您的代码中：

app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite://///todo.db" app.config['SQLALCHEMY_DATABASE_URI'] = False app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

删除此行代码：

app.config['SQLALCHEMY_DATABASE_URI'] = False

试试这行代码：

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///todo.db' app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

对于 VSCode 终端：

>>> import app

>>> from app import db

>>> db.create_all()

尝试启动 sqlalchemy 数据库但出现错误

1 个答案: