It provides a nice interface but is using multiprocessing or multi threading under the hood depending on which executioner you use:
> The ProcessPoolExecutor class is an Executor subclass that uses a pool of processes to execute calls asynchronously. ProcessPoolExecutor uses the multiprocessing module, which allows it to side-step the Global Interpreter Lock but also means that only picklable objects can be executed and returned.
Your trouble seems to involve not understanding how to set up signal handlers, which ProcessPoolExecutor handles for you and exposes via a BrokenProcessPool exception.
> Derived from BrokenExecutor (formerly RuntimeError), this exception class is raised when one of the workers of a ProcessPoolExecutor has terminated in a non-clean fashion (for example, if it was killed from the outside).
It provides a nice interface but is using multiprocessing or multi threading under the hood depending on which executioner you use:
> The ProcessPoolExecutor class is an Executor subclass that uses a pool of processes to execute calls asynchronously. ProcessPoolExecutor uses the multiprocessing module, which allows it to side-step the Global Interpreter Lock but also means that only picklable objects can be executed and returned.