How to terminate python script when the node is shutdown

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Hi,

I'm using this idiom for checking that the node in my python script is working

while not rospy.is_shutdown():
   do some work

but when I kill the node with rosnode kill the while loop does not exit. I suppose rosnode kill triggers the flag associated with is_shutdown(), but maybe I'm wrong.

Could anyone please clarify me on the issue of finishing nodes and the processes that hold them properly? I've checked previous answers, but maybe I've missed a complete example with code on how to catch and handle the related signals.

Thank you very much in advance