Question

I have a long running Python program that raises exception at some point. Is there some way to run this from ipython session and stop on the exception so I could examine the live data?

Answer 1

You may want ipython -i yourscript.py, which will execute your script in the interpreter environment. But this won’t let you inspect the local environment where the exception happened, for example local variables within a function – you’ll just be able to inspect globals. You probably want this instead:

In [1]: %run test.py
<exception occurs>
In [2]: %debug test.py

If you’re not familiar with using PDB, check out some docs first.

Edit thanks to Thomas K