IDLE fails to save files in macOS 12.0.1 Monterey

[donchamberlin]

BPO	45841
Nosy	@terryjreedy, @ronaldoussoren, @ned-deily
Superseder	bpo-44828: tkinter.filedialog linked with Tk 8.6.11 crashes on macOS 12 Monterey, breaking IDLE saves
Files	IDLE save error.png: Screenshot of error message on saving a file from IDLE

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2021-11-19.08:04:29.804>
created_at = <Date 2021-11-19.07:04:25.181>
labels = ['OS-mac', 'type-bug', '3.10']
title = 'IDLE fails to save files in macOS 12.0.1 Monterey'
updated_at = <Date 2021-11-20.01:58:13.570>
user = 'https://bugs.python.org/donchamberlin'

bugs.python.org fields:

activity = <Date 2021-11-20.01:58:13.570>
actor = 'don.chamberlin'
assignee = 'none'
closed = True
closed_date = <Date 2021-11-19.08:04:29.804>
closer = 'terry.reedy'
components = ['macOS']
creation = <Date 2021-11-19.07:04:25.181>
creator = 'don.chamberlin'
dependencies = []
files = ['50450']
hgrepos = []
issue_num = 45841
keywords = []
message_count = 3.0
messages = ['406572', '406574', '406641']
nosy_count = 4.0
nosy_names = ['terry.reedy', 'ronaldoussoren', 'ned.deily', 'don.chamberlin']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '44828'
type = 'behavior'
url = 'https://bugs.python.org/issue45841'
versions = ['Python 3.10']

[donchamberlin]

Running Python 3.10.0 on MacOS 12.0.1 (Monterey). Start IDLE app to get an IDLE shell. Click File->New File. Edit window appears. Type
# This is a comment
in the edit window, then click File->Save or command-S.
Error popup appears: "The save file operation failed to connect to the open and save panel service." (See attached screenshot.)
Click "OK" on the error popup.
File is now saved in the Documents folder with name "None".

[terryjreedy]

Your OS and screenshot are identical to the one attached to bpo-44828. bpo-45641 is another duplicate. The fix should be in current 3.11, 3.10, and 3.9 mac installers.

[donchamberlin]

Thanks, Terry!