Python 3.14 sort is broken due to import #479

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1. Mixaska (dlroy88osu)

   added

   bugIssue identified by VS Code Team member as probable bugIssue identified by VS Code Team member as probable bug

   on Oct 12, 2025
2. github-actions

   added

   triage-neededIssue is not triaged.Issue is not triaged.

   on Oct 12, 2025
3. dancollins commented on Nov 9, 2025

   

   Dan Collins (dancollins)

   on Nov 9, 2025

   More actions

   Similar issue here:

   > python --version 
   Python 3.14.0
   

   And error logs:

   2025-11-10 10:08:29.335 [info] [Error - 10:08:29 AM] Restarting server failed
   2025-11-10 10:08:29.335 [info]   Message: Pending response rejected since connection got disposed
     Code: -32097 
   2025-11-10 10:08:30.299 [info] Traceback (most recent call last):
   
   2025-11-10 10:08:30.299 [info]   File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\tool\lsp_server.py", line 42, in <module>
       from pygls import server, uris, workspace
     File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\libs\pygls\server.py", line 27, in <module>
       from pygls.lsp import ConfigCallbackType, ShowDocumentCallbackType
     File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\libs\pygls\lsp\__init__.py", line 36, in <module>
       from typeguard import check_type
     File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\libs\typeguard\__init__.py", line 12, in <module>
       from ._decorators import typechecked as typechecked
     File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\libs\typeguard\_decorators.py", line 13, in <module>
       from ._transformer import TypeguardTransformer
     File "c:\Users\DanCollins\.windsurf\extensions\ms-python.isort-2023.11.0-dev-universal\bundled\libs\typeguard\_transformer.py", line 5, in <module>
       from ast import (
       ...<48 lines>...
       )
   
   2025-11-10 10:08:30.299 [info] ImportError: cannot import name 'Str' from 'ast' (c:\Users\DanCollins\.conda\envs\sbp\Lib\ast.py)
   
   2025-11-10 10:08:30.387 [info] [Error - 10:08:30 AM] Server initialization failed.
   2025-11-10 10:08:30.387 [info]   Message: Pending response rejected since connection got disposed
     Code: -32097 
   2025-11-10 10:08:30.387 [info] [Error - 10:08:30 AM] The isort server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.
   2025-11-10 10:08:30.387 [info] [Error - 10:08:30 AM] isort client: couldn't create connection to server.
   2025-11-10 10:08:30.387 [info]   Message: Pending response rejected since connection got disposed
     Code: -32097 
   2025-11-10 10:08:30.387 [info] [Error - 10:08:30 AM] Restarting server failed
   2025-11-10 10:08:30.387 [info]   Message: Pending response rejected since connection got disposed
     Code: -32097
   

   I found ast.Str was deprecated back in Python 3.8, warnings added in Python 3.12 and then removed for Python. 3.14: python/cpython#119563. I also see the docs have a task to be updated: python/cpython#137063

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4. sameerdhoot commented on Nov 20, 2025

   

   Sameer Dhoot (sameerdhoot)

   on Nov 20, 2025

   More actions

   I have similar issues. Python 3.14.0, OS: Windows 11, IDE: Cursor

   👍React with 👍1Reacted by desiredState
5. monokal commented on Dec 5, 2025

   

   desiredState (monokal)

   on Dec 5, 2025

   More actions

   Confirmed via the ms-python.isort extension for VSCode/Cursor too.
6. Eduardo Villalpando Mello (edvilme)

   closed this as completedin #521on Feb 17, 2026