futures (Python 2 Backport of concurrent.futures)

The `futures` library is a backport of the `concurrent.futures` module from Python 3, providing a high-level interface for asynchronously executing callables using thread or process pools. It is designed exclusively for Python 2 environments (specifically 2.6 and 2.7), offering a structured way to manage concurrent tasks in older Python runtimes. The current version is 3.4.0, released in October 2022.