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nest-asyncio

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nest-asyncio is a Python library that patches the standard asyncio module to allow nested event loops. By design, asyncio does not support running an event loop within another event loop, which can be problematic in environments where the event loop is already running, such as Jupyter notebooks or certain web servers. nest-asyncio addresses this limitation by enabling the nesting of event loops, facilitating the execution of asynchronous code in these contexts.

Usage Example​

To apply nest-asyncio in your code:

import nest_asyncio
import asyncio

nest_asyncio.apply()

async def main():
    print("Hello, World!")

asyncio.run(main())

In this example, nest_asyncio.apply() patches the current event loop to allow nesting, enabling the execution of the main coroutine even if an event loop is already running.