在运行命令：
python wsgi.py
报错：
Traceback (most recent call last):
File "wsgi.py", line 5, in <module>
app = create_app()
File "C:\Users\kegek\Desktop\flask_tencent\flaskr\__init__.py", line 52, in create_app
dbchemy.create_all()
File "C:\Users\kegek\Miniconda3\envs\flask\lib\site-packages\flask_sqlalchemy\__init__.py", line 1039, in create_all
self._execute_for_all_tables(app, bind, 'create_all')
File "C:\Users\kegek\Miniconda3\envs\flask\lib\site-packages\flask_sqlalchemy\__init__.py", line 1031, in _execute_for_all_ta
bles
op(bind=self.get_engine(app, bind), **extra)
File "C:\Users\kegek\Miniconda3\envs\flask\lib\site-packages\flask_sqlalchemy\__init__.py", line 962, in get_engine
return connector.get_engine()
File "C:\Users\kegek\Miniconda3\envs\flask\lib\site-packages\flask_sqlalchemy\__init__.py", line 555, in get_engine
options = self.get_options(sa_url, echo)
File "C:\Users\kegek\Miniconda3\envs\flask\lib\site-packages\flask_sqlalchemy\__init__.py", line 570, in get_options
self._sa.apply_driver_hacks(self._app, sa_url, options)
File "C:\Users\kegek\Miniconda3\envs\flask\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
run 在wsgi.py文件中app = create_app()时，找init.py中create_app():执行到dbchemy.create_all()或者是db.create_all()时，AttributeError: can't set attribute
参考文章的评论：https://discuss.helloflask.com/t/topic/662
知道了解决办法
pip install -U flask-sqlalchemy
我当前的 flask-sqlalchemy=2.4.4，看了文章说是库的问题，已修复这个问题，目前包含这个修复的2.5.0版本已发布，更新后运行成功。
