Flask Web Framework

The lecture explains API as the interface that enables interaction between components and data formats, using a mobile app example for location-based forecasts.

Explore representational state transfer as a lightweight architectural pattern for web APIs, using standard HTTP methods and endpoints to get, update, or delete data.

Learn how Flask routing maps HTTP requests to specific resources using URL paths, and how requests and responses flow between the client and server.

Explore HTTP status code categories—2xx, 3xx, 4xx, and 5xx—and what each means, with examples like 200 ok, 422 unprocessable entity, and 500 internal server error.

Set up the Flask development environment by selecting an editor, installing Python, and configuring tools on Windows or macOS to run a starter app in the browser using templates.

Learn to set up a Python virtual environment, install Flask, and create a simple hello world app with a / route that handles GET and POST locally.

Learn how to pass data in a Flask app via URL routes and query parameters using GET and POST methods, validate data, and handle status codes like 200 and 500.

Learn to serve static content in a Flask application by adding images and JavaScript to the static folder and referencing them in templates with render_template.

Read post data in a Flask app by defining a post route, parsing the request body as JSON, and returning the processed data.

Learn how to read username and password from a request, validate credentials, and redirect to the appropriate page in a Flask app, while handling unauthorized responses.

Learn to render HTML templates in a Flask app using render_template, organize templates in a templates folder, and pass data to create dynamic dashboards like /dashboard.

Explore the difference between errors and exceptions, and learn to use try and catch blocks to handle runtime errors in Python, including zero division and exception classes, preventing user-facing errors.

Explore how to implement custom error pages in the Flask web framework, triggering and handling internal server errors with a dedicated route and 500 responses.

Explore how to set up an SQLite database in a Flask app, create tables, connect, insert and query data, and run the server.