Calling os.fsync on the stdout/stderr file descriptors kills a subprocess?

I would consider another approach. You may use an indipendent process (multiprocessing. Process) and using two queues to communicate with it (multiprocessing.

Queue) one for the input and the other one for the output. Example on starting the process.

Here is how you could prevent I/O deadlock without radically changing the approach. In the child.

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.