How can I build real-time applications using FastAPI?

How can I build real-time applications using FastAPI?

You can build real-time applications with FastAPI by using WebSockets. This allows for two-way communication between the client and server.

Can you give me an example of a simple WebSocket implementation?

Sure! Here's a basic example: you can create a WebSocket endpoint in FastAPI like this:

from fastapi import FastAPI, WebSocket

app = FastAPI()

@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(f"Message text was: {data}")

What libraries do I need to install for this?

You need to install FastAPI and an ASGI server like uvicorn. You can do this using pip:

pip install fastapi uvicorn

How do I run the FastAPI application?

You can run the application using uvicorn with the following command:

uvicorn your_file_name:app --reload