Using python interactiv "Run Cell" result in Extension Host terminated unexpectedly

Environment data

• VS Code version: November 2020 (version 1.52)
• Extension version (available under the Extensions sidebar): v2020.12.424452561
• OS and version: Ubuntu 20.04
• Python version (& distribution if applicable, e.g. Anaconda): Python 3
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): virtualenv
• Relevant/affected Python-related VS Code extensions and their versions: Pylance v2020.12.2 and Jupiter v2020.12.414227025
• Value of the python.languageServer setting: “Pylance”

Expected behaviour

Using python interactive “Run cell” I would expect to navigate thought my python code on a .py file

Actual behaviour

If I click on “Run cell” a Extension Host terminated unexpectedly error occur

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. touch a hello.py file
2. type print("Hello")
3. click “run cell”

Logs

Details:

• the environment is picked up corrctly
• everything works fine when I click the “run python file in terminal icon”
• Thanks for your help!

[BjMrq]

Thanks for pointing me in the right direction.

IProblem is my system does have the required glibcss (up to GLIBCXX_3.4.28) running strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX

But since I have installed vscode using snap I think extensions run against the runtime of the snap wich only goes up to GLIBCXX_3.4.21 running strings /snap/core/current/usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX

So I guess resolution would be to install vscode from elsewhere or wait for snap to update it’s runtime

cf https://forum.snapcraft.io/t/vscode-glibc-6-needs-update/21088

Installing Visual Studio Code with apt solved the problem

[IanMatthewHuff]

@BjMrq Thanks. That log has a pretty clear error point. Looks like on the version of linux that you have there are some issues with libstdc++ which is required by the zmq module that we use for communication with the kernel. Here is the error in question:

Error 2020-12-23 09:12:41: Exception while attempting zmq : [Error: /snap/core/current/usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /home/bjmrq/.vscode/extensions/ms-toolsai.jupyter-2020.12.414227025/out/client/node_modules/zeromq/prebuilds/linux-x64/electron.napi.glibc.node)

The tricky bit is that the solution here might be OS dependent, so I can’t exactly point you at the precise fix that you need. I took a quick peek online regarding that error, and I see a number of report of linux machines failing to work with ZMQ based on a version of the above error. Looks like some of these might help?

https://stackoverflow.com/questions/48453497/anaconda-libstdc-so-6-version-glibcxx-3-4-20-not-found https://stackoverflow.com/questions/52419004/cannot-run-executable-of-c-zmq-project-on-linux https://stackoverflow.com/questions/38167639/glibcx-3-4-21-not-found

General search that I was using to find these issues: https://www.google.com/search?q=zmq+clibcxx+not+found