ipython/ipython — Issue #1141: "In" numbers are not invalidated when restarting kernel
Author: timo
Created: 2011-12-10 23:58:32+00:00
State: open

when interrupting or restarting the kernel in the notebook, the In numbers are still preserved, thus you can have duplicate numbers.

Additionally, there seems to be no way at all to have the numbers cleared, for instance if you want to distribute example notebooks.