Author: Patrick Li
Many thanks for your double-checking. I tried in the cmd under Windows with "pip install ipdb" as well as "pip install --upgrade ipdb". These commands work fine, and I have the most updated ipdb, but it does not help solving this problem in Jupyter Notebook. It seems my machine have some other bug, hope it is not related to Windows platform, maybe I should consider using a linux machine...
Anyway, I believe "import ipdb; ipdb.set_trace()" should be the standard way to use the package, and it is guaranteed as it works in your computer system.