Python threading, threads do not close

Question

I have a Python program and when I exit the application with Ctrl-c, the script does not close. My process still shows in running processes.

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Answer 1

I was unable to kill my python sub process because I had set the shell=True option in the process.Popen command. I removed shell=True and then I could kill it.

If the subprocess is a shell, then you will have to kill the things it is running before the shell will end itself.

Answer 2

You need to make the thread a daemon thread. To do this add the following line after you call the Thread's init

self.setDaemon(True)

A program will exit when only daemon threads are left alive, the main thread is non-daemonic of course

Answer 3

the_thread.setDaemon(true), see http://docs.python.org/library/threading.html#threading.Thread.daemon