Learn FLASK-RESTFUL with Real Code Examples

Install Flask: `pip install Flask`

Install Flask-RESTful: `pip install flask-restful`

Create a Flask app instance

Define API and resources

Run app using `flask run`

Install Python 3.11+

Create virtual environment

Install Flask and Flask-RESTful

Set FLASK_APP and FLASK_ENV variables

Run app locally and verify endpoints

app.py - main application

resources/ - API resource classes

models/ - ORM models

config.py - configuration settings

requirements.txt - Python dependencies

pip install Flask flask-restful - install packages

flask run - run development server

pytest - run tests

flask shell - interactive app shell

python manage.py db upgrade - manage database migrations

No built-in i18n, but can use Flask-Babel

UTF-8 content supported by default

Locale handling via Flask extensions

Messages externalized for translation

Integrate with external libraries for multi-language support

APIs accessible via HTTP clients

CORS support via Flask-CORS

Follow REST conventions for predictable endpoints

Optional input/output validation for accessibility

Use proper HTTP status codes and error messages

Primarily JSON APIs

Optional HTML templates via Flask’s Jinja2

Can integrate with front-end frameworks

Serve static assets via Flask static folder

No default CSS/JS; optional integration with frameworks

Flask app context manages request/response state

Global state via Flask extensions or in-memory structures

Session and caching for user-specific state

Database-backed models for persistent state

Thread-safe patterns via WSGI server

Database handled via SQLAlchemy, Peewee, or other ORMs

Models map to database tables

Request data parsed via reqparse or Marshmallow

Optional caching via Redis or Flask-Caching

Logging request lifecycle and errors