راهنمایی برای وصل شدن به دیتابیس با فریمورک فلسک

این دستور وارد میکنم اروری نمیده و همچنین دستور بعدی ش ارور نمیده

>>> from blog.models import User , Post 

>>> from blog import db 

اما این دستور وارد میکنم این ارور میده

>>> db.create_all()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\PARVAZ\AppData\Local\Programs\Python\Python310\lib\site-packages\flask_sqlalchemy\extension.py", line 868, in create_all
self._call_for_binds(bind_key, "create_all")
  File "C:\Users\PARVAZ\AppData\Local\Programs\Python\Python310\lib\site-packages\flask_sqlalchemy\extension.py", line 839, in _call_for_binds
engine = self.engines[key]
  File "C:\Users\PARVAZ\AppData\Local\Programs\Python\Python310\lib\site-packages\flask_sqlalchemy\extension.py", line 628, in engines
app = current_app._get_current_object()  # type: ignore[attr-defined]   
  File "C:\Users\PARVAZ\AppData\Local\Programs\Python\Python310\lib\site-packages\werkzeug\local.py", line 513, in _get_current_object
raise RuntimeError(unbound_message) from None
RuntimeError: Working outside of application context.

This typically means that you attempted to use functionality that needed    
the current application. To solve this, set up an application context       
with app.app_context(). See the documentation for more information.

به سایت رسمی ش هم مراجعه کردم ؛ و گفته بود که این کار انجام بدیم ؛ ولی سر در نیاوردم
lask-sqlalchemy

with app.app_context():
db.create_all()