Language Server seemingly stuck at analysis stage

[DonJayamanne]

The status bar does not change from 695 items left....

Here's the log file:
log.log

[aniaan]

I also have the same problem

[zhen8838]

Ubuntu 18.04 languageServer.0.2.41 have same problem
two hours later ...:

[faassen]

In at least my case it's not just seemingly stuck but it also takes up a lot of CPU.

[AlexanderSher]

@DonJayamanne , what module is opened in your case?

[DonJayamanne]

Sorry don't have that info anymore.

[marconfus]

Same here on Ubuntu 16.04.
If I open an empty project with system Python 2.7.12 it looks ok. Just typing some import lines (os or requests for example) it's also ok.
But as soon as I select a VirtualEnv with Python 3.6 and do the same, the Microsoft.Python.LanguageServer process seems to get stuck in an endless loop and uses 100% cpu.
I guess this started after upgrading to the latest version.

[scorphus]

I think I probably have reproducible steps:

1. Create and activate a new Python 3.7.2 virtualenv (I used pyenv)
2. Install packages as detailed in this requirements.txt file (pip install -r requirements.txt)
3. Open vscode and select the interpreter created on step 1 above
4. Create and save a new file with this one line: import boto3

Sorry for a rather big requirements.txt file and for not being able to nail it down to a few packages at the moment. I'll update this issue if that changes.

If anyone could confirm those steps reproduce the issue, I'd be grateful.

Thanks!

[jakebailey]

We have a repro for this (but thanks either way!); it's just idna. #832 (comment)

[jakebailey]

0.2.42 has been built and pushed to all of the channels (containing #873); it should fix the hangup introduced in 0.2.41.

[blackrobot]

@jakebailey this has fixed the issue for me in microsoft/vscode-python#5100. Thank you!

[andrew-weisman]

How do we apply this fix? Thanks very much!

[jakebailey]

Reload VS Code, and if that doesn't update it, you can delete the downloaded language server and have the extension download it again. See microsoft/vscode-python#3977.