调试报错 raise RuntimeError(unbound_message) from None RuntimeError: Working outsi

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db.create_all()
; A% {( V' B; v, l* H# [6 ZTraceback (most recent call last):
  File "F:\Program Files\JetBrains\PyCharm Community Edition 2023.2.1\plugins\python-ce\helpers\pydev\pydevconsole.py", line 364, in runcode
    coro = func()
- D/ U3 t1 y# D7 V$ Q' j' d4 R3 t           ^^^^^^
  File "<input>", line 1, in <module>
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 900, in create_all
7 [9 k* }! j) g- b    self._call_for_binds(bind_key, "create_all")
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 871, in _call_for_binds
* I6 M/ B  E* ?7 W    engine = self.engines[key]
) s# _5 p: d1 m( x7 P* ~             ^^^^^^^^^^^^
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 687, in engines
    app = current_app._get_current_object()  # type: ignore[attr-defined]
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
7 x2 }7 }( a2 y! c4 R3 j, z  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\werkzeug\local.py", line 519, in _get_current_object
. Y* x) _8 ^2 v3 J  y$ f) i    raise RuntimeError(unbound_message) from None
RuntimeError: Working outside of application context.
! ]# Y. U; g; N  TThis 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.