Sync flask-connexion-rest-part-3 with the updated tutorial (#884)

* Sync flask-connexion-rest-part-3 with the maintenance update of Python REST APIs With Flask, Connexion, and SQLAlchemy – Part 3

Replace the legacy Query.get() calls in notes.py with db.session.get().

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Move flask-connexion-rest-part-3 to Connexion 3 and the series' current pins

Re-pin requirements.txt on Connexion 3.3.0, Flask 3.1.3, flask-marshmallow
1.5.0, and marshmallow-sqlalchemy 1.5.0, matching Part 1's update. Move
x-body-name onto requestBody, the only position Connexion 3 reads, and drop
the debug argument that Connexion 3's uvicorn-based run() rejects.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Run Part 3 app with Uvicorn auto-reload like Part 2

Align app.run() with Part 2's app.py so readers continuing the series
keep the same reload behavior.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: realpython-bot

flask-connexion-rest-part-3/requirements.txt

@@ -1,27 +1,41 @@
-attrs==22.1.0
-certifi==2022.9.24
-charset-normalizer==2.1.1
-click==8.1.3
-clickclick==20.10.2
-connexion==2.14.1
-Flask==2.2.2
-flask-marshmallow==0.14.0
-Flask-SQLAlchemy==3.0.2
-idna==3.4
+a2wsgi==1.10.10
+anyio==4.15.1
+asgiref==3.12.1
+attrs==26.1.0
+blinker==1.9.0
+certifi==2026.7.22
+charset-normalizer==3.5.2
+click==8.5.0
+connexion==3.3.0
+Flask==3.1.3
+flask-marshmallow==1.5.0
+Flask-SQLAlchemy==3.1.1
+h11==0.16.0
+httpcore==1.0.9
+httptools==0.9.0
+httpx==0.28.1
+idna==3.20
 inflection==0.5.1
-itsdangerous==2.1.2
-Jinja2==3.1.2
-jsonschema==4.16.0
-MarkupSafe==2.1.1
-marshmallow==3.18.0
-marshmallow-sqlalchemy==0.28.1
-packaging==21.3
-pyparsing==3.0.9
-pyrsistent==0.19.1
-PyYAML==6.0
-requests==2.28.1
-six==1.16.0
-SQLAlchemy==1.4.42
-swagger-ui-bundle==0.0.9
-urllib3==1.26.12
-Werkzeug==2.2.2
+itsdangerous==2.2.0
+Jinja2==3.1.6
+jsonschema==4.26.0
+jsonschema-specifications==2025.9.1
+MarkupSafe==3.0.4
+marshmallow==4.3.1
+marshmallow-sqlalchemy==1.5.0
+python-dotenv==1.2.4
+python-multipart==0.0.32
+PyYAML==6.0.3
+referencing==0.37.0
+requests==2.34.2
+rpds-py==2026.9.1
+SQLAlchemy==2.1.4
+starlette==1.7.0
+swagger_ui_bundle==1.1.0
+typing_extensions==4.16.0
+urllib3==2.8.0
+uvicorn==0.54.0
+uvloop==0.23.0
+watchfiles==1.3.0
+websockets==17.2
+Werkzeug==3.1.9

flask-connexion-rest-part-3/rp_flask_api/app.py

@@ -13,4 +13,4 @@ def home():
 
 
 if __name__ == "__main__":
-    app.run(host="0.0.0.0", port=8000, debug=True)
+    app.run("__main__:app", host="0.0.0.0", port=8000, reload=True)

flask-connexion-rest-part-3/rp_flask_api/notes.py

@@ -4,7 +4,7 @@
 
 
 def read_one(note_id):
-    note = Note.query.get(note_id)
+    note = db.session.get(Note, note_id)
 
     if note is not None:
         return note_schema.dump(note)
@@ -13,7 +13,7 @@ def read_one(note_id):
 
 
 def update(note_id, note):
-    existing_note = Note.query.get(note_id)
+    existing_note = db.session.get(Note, note_id)
 
     if existing_note:
         update_note = note_schema.load(note, session=db.session)
@@ -26,7 +26,7 @@ def update(note_id, note):
 
 
 def delete(note_id):
-    existing_note = Note.query.get(note_id)
+    existing_note = db.session.get(Note, note_id)
 
     if existing_note:
         db.session.delete(existing_note)
@@ -38,7 +38,7 @@ def delete(note_id):
 
 def create(note):
     person_id = note.get("person_id")
-    person = Person.query.get(person_id)
+    person = db.session.get(Person, person_id)
 
     if person:
         new_note = note_schema.load(note, session=db.session)

flask-connexion-rest-part-3/rp_flask_api/swagger.yml

@@ -50,12 +50,12 @@ paths:
         - People
       summary: "Create a person"
       requestBody:
+          x-body-name: "person"
           description: "Person to create"
           required: True
           content:
             application/json:
               schema:
-                x-body-name: "person"
                 $ref: "#/components/schemas/Person"
       responses:
         "201":
@@ -82,10 +82,10 @@ paths:
         "200":
           description: "Successfully updated person"
       requestBody:
+        x-body-name: "person"
         content:
           application/json:
             schema:
-              x-body-name: "person"
               $ref: "#/components/schemas/Person"
     delete:
       tags:
@@ -104,12 +104,12 @@ paths:
         - Notes
       summary: "Create a note associated with a person"
       requestBody:
+          x-body-name: "note"
           description: "Note to create"
           required: True
           content:
             application/json:
               schema:
-                x-body-name: "note"
                 type: "object"
                 properties:
                   person_id:
@@ -141,10 +141,10 @@ paths:
         "200":
           description: "Successfully updated note"
       requestBody:
+        x-body-name: "note"
         content:
           application/json:
             schema:
-              x-body-name: "note"
               type: "object"
               properties:
                 content: