A warm welcome to Flask for Python Devs: Build Real-World Web Apps & REST APIs course by Uplatz.

What is Flask?

Flask is a lightweight (“micro”) Python web framework for building web applications and APIs. “Micro” means its core is small and simple, HTTP handling, routing, templating, and a few utilities, while everything else (DB, auth, forms, migrations, etc.) is added via extensions.

Under the hood it relies on:

• Werkzeug – WSGI utilities (request/response, routing, server)

• Jinja2 – HTML templating engine

Because it’s minimal and modular, Flask is popular for prototypes, microservices, REST APIs, and production apps where you want flexibility over batteries-included.

What does Flask do?

Out of the box, Flask provides:

• Routing: Map URLs to Python functions (“views”).

• Request/Response objects: Access headers, query params, form data, files, JSON.

• Templating: Render HTML with Jinja2 (control flow, filters, auto-escaping).

• Sessions & Cookies: Signed, cookie-based session storage.

• Static files: Serve assets during development.

• Error handling & hooks: @app.errorhandler, before_request, after_request, teardown_request.

• CLI & Dev server: flask run, debug reloader, interactive debugger.

Through extensions you commonly add:

• Database/ORM: Flask-SQLAlchemy migrations with Flask-Migrate (Alembic).

• Forms & CSRF: Flask-WTF (WTForms + CSRF protection).

• Auth: Flask-Login (sessions), Flask-JWT-Extended (tokens).

• Caching/Queues: Flask-Caching, background tasks with Celery/RQ.

• Schema validation: Marshmallow/Pydantic (for APIs).

  
  

How does Flask work?

At a high level, a web request flows like this:

1. WSGI server (e.g., Gunicorn/uWSGI/Waitress) receives HTTP request.

2. The server calls your Flask application callable (app), passing WSGI environ.

3. Flask creates application and request contexts, exposing request, session, g, current_app.

4. Routing matches the URL & method to a view function.

5. Your view runs business logic, talks to DB/services, and returns a Response (HTML/JSON/redirect).

6. After-request hooks run; response goes back through WSGI server to the client.

Key pieces:

• Blueprints: Package routes/templates into reusable modules, then register on the app.

• App factory pattern: Create the app in a function (create_app(config)), making testing/config easier.

• Contexts: Temporary objects tying a request to globals (request, session, g).

• Middleware: WSGI middlewares can wrap the app for cross-cutting concerns (logging, auth gates, etc.).

Course Description

Become a Flask Expert and Build Real-World Web Applications with Python

Flask is one of the most powerful yet lightweight web frameworks in the Python ecosystem.
This hands-on course takes you from the fundamentals of Flask to advanced concepts such as authentication, REST API development, and production deployment.

Through practical, project-driven learning, you’ll master how to design and build robust web applications and APIs using Flask, Jinja2, and SQLAlchemy
You will also learn to manage sessions, handle forms, integrate databases, implement authentication, and deploy Flask apps on platforms like Heroku, AWS, or Docker.

By the end of this course, you will have built over 10 real-world projects, including a Blog App, E-Commerce Website, Chat Application, Weather App, and more—each reinforcing key concepts with hands-on practice.

What You’ll Learn

• Understand the core architecture and workflow of Flask

• Build dynamic and data-driven web applications using Jinja2 templates

• Handle user input, forms, and data validation efficiently

• Integrate and manage databases with Flask-SQLAlchemy

• Develop RESTful APIs to power web and mobile applications

• Implement authentication, authorization, sessions, and cookies

• Schedule background tasks using Celery

• Configure logging, error handling, and app settings for production

• Deploy Flask apps using Docker, Heroku, or AWS

• Build 10+ real-world Flask projects and prepare for developer interviews

Projects You’ll Build

1. To-Do List App

2. Blog Website

3. Weather Application

4. URL Shortener

5. Simple E-Commerce Platform

6. Personal Portfolio Website

7. Real-Time Chat Application

8. Habit Tracker

9. Simple Polling App

10. Task Management API

Each project is designed to apply the skills learned in earlier modules and demonstrate how Flask can be used in real development environments.

Who This Course Is For

• Python developers looking to enter web development

• Backend or full-stack beginners who prefer hands-on learning

• Software engineers interested in RESTful API and microservice development

• Data scientists wanting to serve models via Flask APIs

• Freelancers and entrepreneurs aiming to build and deploy web apps quickly

Technologies and Tools Covered

• Flask Framework (Routing, Views, Blueprints, Templates)

• Jinja2 Templating Engine

• Flask-SQLAlchemy for Database Integration

• Flask-Login for Authentication

• Flask-WTF for Form Handling

• Celery for Background Tasks

• RESTful API Development

• Logging, Error Handling, and Deployment (Heroku, Docker, AWS)

Why Take This Course

This course offers a complete end-to-end understanding of Flask development. You will gain the skills to:

• Design and build Flask applications from scratch

• Connect applications to databases and integrate frontends

• Develop secure, scalable REST APIs

• Deploy applications to production environments

• Confidently answer Flask-related interview questions

Course Highlights

• Step-by-step, beginner-to-advanced curriculum

• Real-world, portfolio-ready projects

• Industry best practices for scalability and maintainability

• Instructor-led demonstrations and code walkthroughs

• Downloadable resources and reference materials

Flask for Python Devs: Build Real-World Web Apps & REST APIs - Course Curriculum

Module 1: Getting Started with Flask

• Lecture 1 – Introduction to Flask

• Lecture 2 – Flask Routing and Views

• Lecture 3 – Flask Templates with Jinja2

Module 2: Working with User Input & Data

• Lecture 4 – Handling Forms and User Input in Flask

• Lecture 5 – Flask Database Integration

Module 3: Building APIs and Advanced Features

• Lecture 6 – Flask API Development with RESTful APIs

• Lecture 7 – Flask Task Management API

• Lecture 8 – User Authentication with Flask-Login

• Lecture 9 – Flask Session Management and Cookies

• Lecture 10 – Flask and Frontend Integration

• Lecture 11 – Flask Background Tasks and Celery

• Lecture 12 – Flask Logging and Error Handling

Module 4: Deployment and Production

• Lecture 13 – Flask Deployment and Production Setup

Module 5: Flask Projects (Hands-On Applications)

• Lecture 14 – To-Do List App

• Lecture 15 – Blog Website

• Lecture 16 – Weather App

• Lecture 17 – URL Shortener

• Lecture 18 – Simple E-Commerce Site

• Lecture 19 – Personal Portfolio Website

• Lecture 20 – Real-Time Chat Application

• Lecture 21 – Habit Tracker

• Lecture 22 – Simple Polling App

Module 6: Career Preparation

• Lecture 23 – Interview Questions and Answers

Start Building Flask Applications Today

Enroll now to master Flask, one of the most popular Python web frameworks, and learn how to develop, deploy, and scale real-world web applications and APIs with confidence.