Any ready solution for basic asynchronous non blocking HTTP clients with Stackless Python 3 1

Stackless Python 3.1 is an older version of the Python programming language that aimed to provide support for microthreads and lightweight concurrency. However, as of my last knowledge update in January 2022, Stackless Python has not been widely adopted, and its usage is not as prevalent as mainstream Python versions. Nevertheless, I'll provide you with a basic tutorial on implementing a simple asynchronous (non-blocking) HTTP client using Stackless Python 3.1.
Please note that Stackless Python may have limited community support and may not be as actively maintained as more recent Python versions. Additionally, modern asynchronous programming in Python is typically done using the asyncio library, which was introduced in Python 3.4. If possible, consider using a more recent version of Python and asyncio for asynchronous programming.
greenlet is a library for lightweight concurrent programming. You can install it using the following:
In this example, the fetch function performs a synchronous HTTP request, and async_fetch uses greenlet to run the fetch function asynchronously. The handle_response function is a callback that will be called when the asynchronous request is complete.
Remember that Stackless Python 3.1 may have limitations and may not provide all the features and optimizations available in more recent Python versions. If possible, consider upgrading to a more recent version of Python and using the asyncio library for asynchronous programming.
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