Python Intellisense very slow

Environment data

• VS Code version: 1.23.1
• Extension version (available under the Extensions sidebar): 2018.4.0
• OS and version: Mac Os 10.13.4
• Python version (& distribution if applicable, e.g. Anaconda): python3.6.5 [homebrew]
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): virtualenv
• Relevant/affected Python packages and their versions: all, but testing with pandas

Actual behavior

intellisense and autocomplete very slow, at first it works but after a couple of minutes stops working. Developer tools throwing an error [see below]

Expected behavior

I guess intellisense should work, ideally immediately

Steps to reproduce:

1. XXX

Logs

nothing interesting here, only pylint results

XXX

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)

[jajcayn]

@brettcannon thanks for the response! In the meantime, I saw that you merged #1868 and I got the feeling that the problem is solved! At least in the last week [I was travelling lately, rather than working] I didn’t notice the aforementioned Jedi error. Sometime intellisense slows down [but again, I am working with large codebase]. However, I’ll try your new language server and let you know which one handles better large code bases. Thanks again, for all the work!

[Arkowen]

i have same promble but worse than you and there is a same promble https://github.com/Microsoft/vscode/issues/50818

Open a Python file in the editor with the Python extension enabled. Begin typing an identifier Press tab, expected result: autocompletion suggestions actual result: tab inserted Resume typing an identifier Press Ctrl-Space expected result: autocompletion suggestions actual result: suggestion context menu pops open, stays on “Loading” arbitrarily long

If I disable the Python extension and try the above, I get suggestions as expected, but no Python-aware suggestions (parameter values, keywords, etc.)