BoundedSemaphore hangs in threads on KeyboardInterrupt?

You can use the signal module to set a flag that tells the main thread to stop processing.

In this case, it looks like you might just want to use a thread pool to control the starting and stopping of your threads. You could use Chris Arndt's threadpool library in a manner something like this.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.