The attached script runs a long processing loop.

Start it in IDLE. Open the script and run it.

Press control-C. Result: message, KeyboardInterrupt with traceback message.

In shell window, turn on Debugger. Run the script.

Press control-C. Result: Restrat message shown in Python Shell. Debug Control shows no change.

Expected behavior: For keyboard interrupt, or for any uncaught exception, Debug Control should show the same information as if there was a breakpoint. For instance, the stack with line numbers, locals and globals.

Better: make a way to interrupt the program in a long loop or process, so that the programmer can tell -- live -- where the program is, and where most of the time is being used. Then use the regular buttons, Go, etc. to continue the process, possibly interrupted again.

Also: the IDLE Python Shell and Debug Control show no "running" indicator, so there is no easy way to tell if the program is still going.