Python: Handle cancellation in an asyncio background task

async_loop_cancellation.py

import asyncio
import httpx


async def infinite_loop(backend_client):
    while True:
        try:
            await asyncio.sleep(3)
        except asyncio.CancelledError:
            print("Cancelled")
            await backend_client.aclose()
            break


try:
    asyncio.run(infinite_loop(httpx.AsyncClient()))
except KeyboardInterrupt:
    pass