How can I use async generators in Python?

How can I use async generators in Python?

Async generators allow you to yield values asynchronously, making it easier to handle I/O-bound tasks. You can define an async generator using the async def syntax and the yield keyword.

Can you show me a simple example?

Sure! Here's a basic example:

import asyncio

async def async_gen():
    for i in range(5):
        await asyncio.sleep(1)  # Simulate an I/O operation
        yield i

async def main():
    async for value in async_gen():
        print(value)

asyncio.run(main())

What happens if I don't use await inside the generator?

If you don't use await, the generator won't yield control back to the event loop, which can lead to blocking behavior and defeat the purpose of using async.

Are there any performance benefits to using async generators?

Yes, async generators can improve performance in I/O-bound applications by allowing other tasks to run while waiting for I/O operations to complete.