Python LSP not working

[Derek Hohls]

Hi

I have done multiple reinstalls on my Linux Mint machine. Spyder 6.1.1 is running from its own conda virtual environment. I have done a settings reset and, it seems, Spyder is now starting up in pure default mode.

Despite this, code folding, completion and outlining does not work, and the bottom panel flags that the Python Language Server needs a restart. Again, it does not matter how many times I do this, the warning is still there.

When I start in debug mode, the logs show this:

2025-12-05 16:40:51,032 [INFO] [spyder.plugins.completion.providers.languageserver.provider] -> Manual restart for python...
2025-12-05 16:40:51,033 [DEBUG] [spyder.plugins.editor.widgets.codeeditor.lsp_mixin] -> Stopping completion services for /home/derek/.config/spyder-py3/temp.py
2025-12-05 16:40:51,033 [DEBUG] [spyder.plugins.outlineexplorer.widgets] -> Stop symbol services for language python
2025-12-05 16:40:51,033 [INFO] [spyder.plugins.completion.providers.languageserver.provider] -> Stopping LSP client for python...
2025-12-05 16:40:51,033 [INFO] [spyder.plugins.completion.providers.languageserver.client] -> Stopping python client...
2025-12-05 16:40:51,037 [DEBUG] [spyder.plugins.editor.widgets.codeeditor.lsp_mixin] -> Stopping completion services for /home/derek/.config/spyder-py3/temp.py
2025-12-05 16:40:51,037 [DEBUG] [spyder.plugins.outlineexplorer.widgets] -> Stop symbol services for language python
2025-12-05 16:40:51,038 [INFO] [spyder.plugins.completion.providers.languageserver.provider] -> Starting LSP client for python...
2025-12-05 16:40:51,038 [INFO] [spyder.plugins.completion.providers.languageserver.client] -> Starting server: /home/derek/miniconda3/envs/spyder_env/bin/python3.14 -m pylsp --host 127.0.0.1 --port 2087 --tcp --check-parent-process --log-file /home/derek/.config/spyder-py3/lsp_logs/server_python_90637.log -vv
2025-12-05 16:40:51,047 [INFO] [spyder.plugins.completion.providers.languageserver.client] -> Starting transport for python: /home/derek/miniconda3/envs/spyder_env/bin/python3.14 -u /home/derek/miniconda3/envs/spyder_env/lib/python3.14/site-packages/spyder/plugins/completion/providers/languageserver/transport/main.py --folder /home/derek/.config/spyder-py3/lsp_paths/root_path --transport-debug 3 --server-host 127.0.0.1 --server-port 2087  --zmq-in-port 41559 --zmq-out-port 38529 --external-server
2025-12-05 16:40:51,057 [DEBUG] [spyder.plugins.completion.providers.languageserver.client] -> LSP python client started!
2025-12-05 16:40:51,178 [DEBUG] [spyder.plugins.completion.providers.languageserver.client] -> python response: server_ready

But still no change to the IDE.

I'd appreciate any help to get this to work - have been using Spyder too many years to abandon it now!

Thanks

Derek

[Daniel Althviz Moré]

Hi Derek,

Seems like you are running Spyder with Python 3.14. I think there was an issue related with that Python version and the dependency Spyder uses as Python language server (Fix starting the server for Python 3.14 and run tests with that version by ccordoba12 · Pull Request #690 · python-lsp/python-lsp-server). Latest Spyder (6.1.2) and python-lsp-server (1.14.0) releases should address that so let us know if updating Spyder helps!

Best regards,

Daniel

[Derek]

Hi Daniel

Yes, it works perfectly now after updating.

I appreciate the feedback.

Thanks

Derek

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