Intellisense does not work on function level imports when using Vim plugin and in a decorated function

Environment data

• VS Code version: 1.22.2
• Python Extension version: 2018.4.0-beta (doesn’t work with non-beta either)
• Vim Extension Version: 0.11.5
• OS and version: MacOS 10.13.4
• Python version: Python 3.6.2
• Type of virtual environment used : pyenv virtualenv

Actual behavior

Intellisense does not work when using the Vim plugin and importing a class at function level when the function is wrapped in a decorator, but works when import is module level

Intellisense starts working if I deleted the decorator. If I add the decorator back it continues to work normally.

Expected behavior

Intellisense should work when imports are at function level in a decorated function

Steps to reproduce:

1. Install Vim plugin
2. Import a class while in a function that is wrapped with a decorator
3. Try and get intellisense on class attributes (doesnt work)
4. Delete decorator
5. Intellisense works
6. Re-add decorator
7. Intellisense works

Logs

The only output I get is when Flake8 shows that Session. is invalid syntax while waiting for intellisense to start working

##########Linting Output - flake8##########
20,12,E,E999:SyntaxError: invalid syntax

Output from Console under the Developer Tools panel

/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3301 Overwriting grammar scope name to file mapping for scope source.python.
Old grammar file: /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/python/syntaxes/MagicPython.tmLanguage.json.
New grammar file: /Users/christophepouliot/.vscode/extensions/magicstack.MagicPython-1.0.12/grammars/MagicPython.tmLanguage
e.register @ /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3301
/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3301 Overwriting grammar scope name to file mapping for scope source.sql.
Old grammar file: /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/sql/syntaxes/sql.tmLanguage.json.
New grammar file: /Users/christophepouliot/.vscode/extensions/ms-mssql.mssql-1.3.1/syntaxes/SQL.plist
e.register @ /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3301

[brettcannon]

And works fine in analysis engine.

[DonJayamanne]

@brettcannon @ericsnowcurrently @MikhailArkhipov @d3r3kk Ok, any VIM users in our team. I’m struggling with VIM (i have no idea how VIM works, lol).