Closing Ert GUI gives RuntimeError: GUILogHandler has been deleted in terminal

[larsevj]

Describe the bug
When closing the Ert GUI on macos14 arm with python3.12 you get the following error in the terminal:

Exception ignored in atexit callback: <function shutdown at 0x10435c0e0>
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/python@3.12/3.12.4/Frameworks/Python.framework/Versions/3.12/lib/python3.12/logging/__init__.py", line 2263, in shutdown
    if getattr(h, 'flushOnClose', True):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: wrapped C/C++ object of type GUILogHandler has been deleted

Does not seem to happen with python3.11, but as we run our workflow tests with python3.12 this should be looked into.

To reproduce
Steps to reproduce the behaviour:

1. pip install ert
2. ert gui my_config.ert
3. Close the ert gui

Expected behaviour
Should not get this error, and investigate why this happens.

Environment

• OS: macos14 (arm)
• ERT/Komodo release: main and (ert 10.1.11)
• Python version: 3.12
• Remote/HPC execution involved: [no]

[eivindjahren]

This should not be possible as GuiLogHandler is created by

ert/src/ert/gui/tools/event_viewer/panel.py

Lines 56 to 69 in 2ce2080

	@contextmanager
	def add_gui_log_handler() -> Iterator[GUILogHandler]:
	"""
	Context manager for the GUILogHandler class. Will make sure that the handler
	is removed prior to program exit.
	"""
	logger = logging.getLogger()
	handler = GUILogHandler()
	logger.addHandler(handler)
	yield handler
	logger.removeHandler(handler)

This doesn't seem to happen with python 3.12 on ubuntu, so I suggest someone with a mac check this out.

[larsevj]

I get the same error using python3.12 on RHEL8, I have also seen the error happen on python3.12 on the ubuntu github actions runners, so seems to not be exclusively related to mac.

[eivindjahren]

I'll have another look then :)