Flask from Beginner to Master: Core Technologies and Extended Applications

Flask is a lightweight Python Web framework centered on a "micro" design. It is flexible and supports rich extensions, making it suitable for both beginners and large-scale projects. Installation is recommended with a virtual environment followed by `pip install flask`. Core technologies include routing (dynamic parameters, multiple HTTP methods), the Jinja2 template engine (variables, conditional rendering), and static file management. Advanced core functionalities involve session management, redirection, database operations with Flask-SQLAlchemy, and user authentication with Flask-Login. Commonly used extensions include Flask-WTF (forms), Flask-RESTful (APIs), and Flask-Admin (backend management). For production deployment, options include Gunicorn/Nginx, cloud platforms (PythonAnywhere, Heroku), or Docker. Through practice and extended components, Flask enables full-stack development from small projects to complex applications.