Flask
Web development, one drop at a time.
Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries. It has no database abstraction layer, form validation, or any other components where pre-existing third-party libraries provide common functions.
However, Flask supports extensions that can add application features as if they were implemented in Flask itself. Extensions exist for object-relational mappers, form validation, upload handling, various open authentication technologies and several common framework related tools.
- Language: Python
- Architecture: Microframework
- Core Philosophy: Simplicity and Extensibility
Key Features
Why developers choose Flask.
Lightweight and Modular
Flask is a microframework, which means it has a small core with extension capabilities. This design keeps the framework lean and easy to learn, while allowing developers to add the tools they need.
Flexible
With Flask, you have the freedom to choose your libraries and tools. This flexibility is ideal for developers who want to use specific technologies or build custom solutions.
Jinja2 Templating
Flask uses the Jinja2 template engine, which allows you to build dynamic HTML pages. Jinja2 is powerful, fast, and easy to use, with features like template inheritance and macros.
Werkzeug WSGI Toolkit
Flask is built on top of the Werkzeug WSGI toolkit, which provides a solid foundation for building web applications. Werkzeug handles the low-level details of the WSGI protocol, so you can focus on your application logic.
Extensive Documentation
Flask has excellent documentation that is clear, comprehensive, and easy to follow. This makes it easy for new developers to get started and for experienced developers to find the information they need.
Community and Extensions
Flask has a large and active community that has created a wide range of extensions. These extensions add features like database integration, form validation, and authentication to your Flask applications.
Implementation & Strategy
Costs, timelines, and strategic considerations for adopting Flask.
Estimated Project Costs
Flask projects are often more affordable than Django projects, due to their smaller scope. A simple Flask project might cost between $2,000 and $15,000, while a mid-sized project could range from $15,000 to $75,000. Large, complex projects can still exceed $75,000, but are less common.
Implementation Strategy
A typical Flask project starts with a single Python file and grows from there. As the project grows, it can be organized into a package with multiple modules. Flask's flexibility allows developers to choose the libraries and tools that are best suited for their project. This makes it a great choice for building APIs, microservices, and other small to medium-sized applications.
Comparisons
How Flask stacks up against other Python frameworks.