sqlalchemy.exc.ProgrammingError: (_mysql_exceptions.ProgrammingError) (1146, "Table 'xxx.authority' doesn't exist")

• 我是在写项目中把全部的表都删了, 然后进行新建

if __name__ == '__main__':
    db.create_all()

报错内容
```
The above exception was the direct cause of the following exception:

Traceback (most recent call last):
省略...............
File "XXX\app\admin\forms.py", line 10, in <module>
authority_list = [(v.id, v.name) for v in Authority.query.all()]
省略...............
sqlalchemy.exc.ProgrammingError: (_mysql_exceptions.ProgrammingError) (1146, "Table 'xxx.authority' doesn't exist") [SQL: 'SELECT authority.id AS authority_id, authority.name AS authority_name, authority.url AS authority_url, authority.add_time AS authority_add_time \nFROM authority'] (Background on this error at: http://sqlalche.me/e/f405) </module>

Process finished with exit code 1
```

• 我们可以从上述内容中知道他是,表不存在,然而他却在forms.py先进行查询, emmmmmmm

• 在forms.py中先将查询部分注释, 执行完db.creat_all()后,再去掉注释

authority_list = []
#authority_list = [(v.id, v.name) for v in Authority.query.all()]