debugging - Method to peek at a Python program running right now

Question

Is it possible to find any information about what a Python program running right now is doing without interrupting it?

Also, if it isn't possible, is there anyway to crash a running Python program so that I can at least get a stacktrace (using PyDev on Ubuntu)?

I know I should have used logs or run it in debug mode or inserted a statement to run the debugger...

Related questions

• Getting stack trace from a running Python program - Very similar, but more general, this question was intended to be about debugging a Python program that is running right now.

Answer 1

If you place

import code
code.interact(local=locals())

at any point in your script, python will instantiate a python shell at exactly that point that has access to everything in the state of the script at that point. ^D exits the shell and resumes execution past that point.

You can even modify the state at that point from the shell, call functions, etc.