Flask

At this level, individuals have a basic understanding of what Flask is and its uses. They are familiar with the concept of web development and have a basic knowledge of Python programming language. However, they may not be able to create applications using Flask yet.

Novices can install Flask and understand its application structure. They know how to create basic views and templates, and understand routing in Flask. They also have a grasp of HTTP methods like GET and POST. At this stage, they can build simple Flask applications.

Intermediate users can use Flask's request object and handle forms. They understand session management in Flask and can use Flask-SQLAlchemy for database operations. They also know how to handle errors in Flask and use the Jinja2 template engine. They can build more complex applications with user input and database interactions.

Advanced users can build RESTful APIs using Flask and use various Flask extensions like Flask-WTF and Flask-Login. They understand Flask Blueprints and can use Flask-Mail for email handling. They also know how to deploy Flask applications on platforms like Heroku and AWS. They can build large, structured applications and deploy them.

Experts have a deep understanding of Flask's internal workings and can customize its behavior. They know advanced Flask patterns and best practices, and can troubleshoot and debug complex Flask applications. They also have experience with testing Flask applications using tools like pytest. They can build, test, and optimize complex, robust Flask applications.