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Flask

What is Flask?

A lightweight, micro web framework for Python that provides the essentials for web development without unnecessary abstractions. Designed to be simple, flexible, and easy to extend. Follows a "micro" philosophy, providing only what's needed and allowing developers to choose their own tools. Features a built-in development server, debugger, and Jinja2 templating. Powers applications for companies like Netflix, Reddit, and LinkedIn. Known for its simplicity and minimal learning curve.

When to use it

  • Perfect for building small to medium web applications, REST APIs, and microservices where you want control and flexibility.
  • Ideal for prototyping, learning web development, or when you need a lightweight framework.
  • Excellent for building APIs, simple web applications, and when you prefer choosing your own libraries.
  • Commonly used for building backend services, when Django feels too heavy, or for projects that need custom solutions.

When NOT to use it

  • Large applications requiring many features - Django provides more built-in functionality
  • When you need automatic API documentation - FastAPI generates it automatically
  • Applications requiring built-in admin interface - Django has comprehensive admin
  • When you want async support out of the box - FastAPI is built for async

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