Explain how to use Django Channels.

Instruction: Discuss what Django Channels are and how they are used to handle WebSockets in Django.

Context: This question probes the candidate's understanding of asynchronous communication in Django, specifically the use of Django Channels to build real-time features like chat applications.

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Django, as a high-level Python web framework, facilitates rapid development and clean, pragmatic design. Traditionally, it has been exceedingly efficient for request-response cycles, which align perfectly with HTTP's stateless nature. However, the modern web demands more interactive experiences—such as live notifications, chats, and real-time data feeds. This is where WebSockets come into play, allowing for bidirectional communication between the client and server. Django itself does not natively support WebSockets, but this functionality can be seamlessly integrated through Django Channels.

Django Channels extends Django to handle WebSockets, HTTP2, and other protocols. It layers on a Django project, offering a familiar yet enhanced asynchronous framework. The key here is "asynchronous." Unlike the synchronous request-response cycle, asynchronous communication doesn't require the client to wait for the server to process the request and send back a response. This is crucial for real-time applications, where you need a continuous, open connection that can send and receive messages at any time, without reloading the web...

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