Kernel died on recursive iterator

[eendebakpt]

The following minimal example results in a ValueError when executed directly

from itertools import pairwise

def g():
    yield next(it)

it = pairwise(g())
next(it)

(e.g. run python example.py, which example.py containing the code above)

When running the same code in a qtconsole (or a Spyder cell) I get

The kernel died, restarting...

(or in spyder)

Exception ignored in: <generator object g at 0x000001F52B734940>
Traceback (most recent call last):
  File "C:\Users\eendebakpt\AppData\Local\Temp\ipykernel_7984\1968913502.py", line 4, in g
ValueError: generator already executing

The kernel died, restarting...

The code is obviously not very sensible to run, but still the kernel should not restart.