IPython crashes on windows server with locale.setlocale

[Michael Hecht]

Working with Spyder or directly IPython on Windows Server 2019 we face the problem, that with Python 3.11.8 as well as Python 3.12.3 on this code the IPython environment crashes. Code:

import time
import locale

locale.setlocale(locale.LC_ALL,"de_DE.UTF-8")

print(time.localtime())

Message in IPython spyder (varies, last is restart kernel):

Windows fatal exception: code 0xc0000374

Main thread:
Current thread 0x00025920 (most recent call first):
  File "c:\users\di29394\.spyder-py3\temp.py", line 13 in <module>
  File "C:\Python\Python312\Lib\site-packages\spyder_kernels\py3compat.py", line 356 in compat_exec
  File "C:\Python\Python312\Lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 473 in exec_code
  File "C:\Python\Python312\Lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 615 in _exec_file
  File "C:\Python\Python312\Lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 528 in runfile
  File "C:\Users\di29394\AppData\Local\Temp\20\ipykernel_127360\4017716904.py", line 1 in <module>

Kernel wird neu gestartet...

On commandline IPython exits with no message. The crashing command is the access to time.localtime().

[Michael Hecht]

It seems that it works with locale.setlocale(locale.LC_ALL,"deu_deu"). Setting e.g. locale.setlocale(locale.LC_ALL,"xy_xy") crashed again, so it obviously crashes on wrong or non-existing locale.