Initialize Repo

.gitignore

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+venv
+.vscode
+.env

flaskr/__init__.py

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+import os
+from flask import Flask
+
+app = Flask(__name__)
+
+def create_app(test_config=None):
+
+    app = Flask(__name__, instance_relative_config=True)
+    app.config.from_mapping(
+        SECRET_KEY='dev',
+        DATABASE=os.path.join(app.instance_path, 'flaskr.sqlite'),
+    )
+
+    if test_config is None:
+        # load the instance config, if it exists, when not testing
+        app.config.from_pyfile('config.py', silent=True)
+    else:
+        # load the test config if passed in
+        app.config.from_mapping(test_config)
+
+    # ensure the instance folder exists
+    try:
+        os.makedirs(app.instance_path)
+    except OSError:
+        pass

flaskr/config.py

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+import os

requirements.txt

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+click==8.0.3
+Flask==2.0.2
+flask-marshmallow==0.14.0
+Flask-SQLAlchemy==2.5.1
+greenlet==1.1.2
+itsdangerous==2.0.1
+Jinja2==3.0.2
+MarkupSafe==2.0.1
+marshmallow==3.14.0
+psycopg2==2.9.1
+six==1.16.0
+SQLAlchemy==1.4.26
+webargs==8.0.1
+Werkzeug==2.0.2