Django is an open source web framework written in Python. It is designed to help developers build complex web applications quickly and easily. It is based on the Model-View-Template (MVT) architectural pattern.
For example, if you wanted to build a website for a blog, you could use Django to create the models for the posts, the views to display the posts, and the templates to render the HTML. You could also use Django to handle user authentication, form submissions, and more.