How to catch PyCharm debugger's "Stop Button"?

Question

Quick Question: What signal/Exception does PyCharm's Stop Button send when debugging a python script?

Background: Several posts document that hitting Ctrl-C doesn't send a Keyboard Interrupt/SIGINT signal to a python script when using PyCharm's Debugger. Fine. My question is, what does get sent to the Python script when clicking the Debugger's "Stop Button". I'd like to re-write my code to catch whatever that signal/Exception is. [I'm using OSX w/PyCharm 4.0.4]

Answer 1

When you stop the process after debugging it, it sends a SIGKILL signal to the interpreter.

Process finished with exit code 137

Exit codes above 128 mean that it's a 128 + a signal's number (in this case, 9, which is a SIGKILL).

You could catch SIGTERM using signal.signal(), but SIGKILL can't be caught. There's nothing you can do with it.
Well, you could set up a separate script that would monitor the first one (checking for its PID existance in the running processes, for example) and do something if the given process is terminated.