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You can debug programs that ran in the past using debuggers like rr[0], which support both recording execution for later debugging, or stepping backward in a running process.
[0]: https://rr-project.org/
One thing I have used is drop into the Python debugger (also ipdb) from within a signal handler. Then I can run a kill, and have it drop into the debugger.
There are some of cute hacks to get a remote debugger which I haven't used in years.
https://github.com/sassoftware/epdb can start and connect to a remote debug instance
https://github.com/gotcha/ipdb
One thing I have used is drop into the Python debugger (also ipdb) from within a signal handler. Then I can run a kill, and have it drop into the debugger.
There are some of cute hacks to get a remote debugger which I haven't used in years.
https://github.com/sassoftware/epdb can start and connect to a remote debug instance
https://github.com/gotcha/ipdb