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-# code_snippets
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+# code_snippets
+## Flask-SQLAlchemy Version 3.0.0 update
+- An active Flask application context is always required to access `session` and `engine`, regardless of if an application was passed to the constructor.
+- Without an application context, creating db from terminal will raise `RuntimeError: Working outside of application context.` when you try to invoke `db.create_all()` from python interpreter.
+- To counteract this issue, two solutions are presented:
+  1. `flask shell` offers made-ready app context and instance to create db.
+  2. Import app from FlaskBlog and create db under app context:
+    ```
+    from flaskblog import app
+    with app.app_context():
+        db.create_all()
+    ```
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