Hi I've aquired a program written in Python, and without much knowledge of the language I'm trying to make some changes to it. The original program starts, runs a certain process and then finishes. I want to adapt it so that, at a certain stage of the process, a new process is started from scratch, running at the same time as the original one. When the original one is finished, it should exit without causing the newer process to stop.
I've successfully achieved this using sys.popen methods to start separate processes, but come to realise that running seperate processes is not a very good solution, since it uses up more memory and becomes harder to manage. I'd like the same thing to be achieved using threads. I've come as far as being able to start the program which runs the first thread. My problem arrises when I want the new thread to be started. It seems that if I do this by calling a function from within the thread, I'm unable to stop the original thread whenever that finishes. I imagine that what I've achieved is something like: Start file (eg start.py) starts Thread 1 Thread 1 starts a new thread (Thread 2) and becomes the parent of that thread Thread 2 starts a new thread (Thread 3)... and so on I think that what I want is something like: Start file starts Thread 1 Thread 1 informs start file that a new thread should be started; start file starts Thread 2 ... and so on So, if my thinking so far is correct, how can a thread cause another thread to be started without becoming its parent? -- http://mail.python.org/mailman/listinfo/python-list
