Python Flask Complete Tutorial

What is Flask ?

Flask is a micro web framework for building web applications in Python. It is a lightweight and flexible framework that provides the necessary tools and features for building web applications, but leaves many design decisions to the developer. Flask is considered a micro framework because it provides only the bare essentials for building web applications, allowing developers to have more control over the architecture and design of their applications.

Some key features of Flask include:

  • Routing: Flask allows developers to define routes, which map URLs to functions that handle incoming requests and generate responses.
  • Templating: Flask comes with a built-in templating engine that allows developers to render dynamic HTML pages by combining HTML templates with data from their application.
  • Request handling: Flask provides convenient tools for handling incoming requests, including parsing request data, handling cookies, and managing sessions.
  • Database integration: Flask can easily integrate with various databases, such as SQLite, MySQL, and PostgreSQL, allowing developers to store and retrieve data from their web applications.
  • Extensibility: Flask is highly extensible and allows developers to easily add third-party extensions for additional functionality, such as authentication, caching, and more.
  • Lightweight: Flask is designed to be lightweight and has a small code footprint, making it easy to understand and use for small to medium-sized web applications.

Flask is widely used in the Python community for building web applications, APIs, and other web-related projects, and it is known for its simplicity and flexibility, making it a popular choice for developers who prefer minimalistic frameworks that allow them to have more control over their applications.