quart

Quart is a Python framework for building web applications that need to handle many requests at the same time without slowing down. If you've heard of Flask, Quart is essentially the modern, faster version of it—built specifically for handling real-time interactions and high-traffic scenarios.

Here's what you can actually do with it: serve web pages with HTML templates, build APIs that return JSON data, set up live two-way communication with WebSockets (think chat apps or live notifications), and handle streaming data efficiently. The key difference from simpler frameworks is that Quart uses Python's async capabilities, which means it can juggle multiple user connections simultaneously without getting bogged down—like a waiter who can take orders from ten tables at once instead of serving them one at a time.

The framework is designed to feel familiar if you already know Flask. The syntax is nearly identical; you mostly just add the async and await keywords to your code. A typical Quart app starts with decorators that map URLs to functions—one function might return an HTML page, another might respond with JSON data, and another might handle a WebSocket connection for real-time messaging. You run it with a single command and it's ready to serve traffic.

Who would use this? Any Python developer building a web service where responsiveness matters—a real-time dashboard, a chat application, an API that needs to handle thousands of requests per second, or a modern web app with live updates. Developers already comfortable with Flask can switch to Quart with minimal relearning. The documentation is straightforward, and there's an active community on Discord if you get stuck.