No intellisense for files untitled docs (not saved to disc) when using Language Server but works in Jedi

[rchiodo]

Environment data

• VS Code version: 1.30.0 -insider
• Extension version (available under the Extensions sidebar): 2018.11.0-rc
• OS and version: Windows 10
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.5
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
• Relevant/affected Python packages and their versions:

Actual behavior

No intellisense.

Expected behavior

Intelliense

Steps to reproduce:

1. Turn off Jedi
2. File new file (do not save to disc)
3. Switch to python
4. Type 'import sys'
5. Type 'sys.'

No intellisense comes up.

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

Starting Microsoft Python language server.
Microsoft Python Language Server version 0.1.65.0
Initializing for C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\python.exe

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

log.ts:157  INFO no standard startup: panel is active
extensionHost.ts:329 [Extension Host] debugger listening on port 57284
extensionHost.ts:235 Extension Host
extensionHost.ts:236 Debugger listening on ws://127.0.0.1:57284/67413935-dc17-4384-9696-4b314ccc4e95
For help see https://nodejs.org/en/docs/inspector

console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Create file systemwatcher with pattern *\python.exe (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Create file systemwatcher with pattern *\*\python.exe (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Register Intepreter Watcher, Arg 1: {"$mid":1,"fsPath":"f:\\Training\\SnakePython","external":"file:///f%3A/Training/SnakePython","path":"/f:/Training/SnakePython","scheme":"file"}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Create file systemwatcher with pattern *\python.exe (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Create file systemwatcher with pattern *\*\python.exe (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Display locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Notify locators are locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Detected refreshing of Interpreters, Arg 1: {}, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Build the workspace interpreter watcher, Arg 1: {"$mid":1,"fsPath":"f:\\Training\\SnakePython","external":"file:///f%3A/Training/SnakePython","path":"/f:/Training/SnakePython","scheme":"file"}, Return Value: UNABLE TO DETERMINE VALUE (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Register Intepreter Watcher, Arg 1: undefined, Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Build the workspace interpreter watcher, Arg 1: undefined, Return Value: UNABLE TO DETERMINE VALUE (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Get language server folder name, , Return Value: "languageServer.0.1.65" (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Failed to get interpreter information for 'C:\Anaconda\python.exe' Error: spawn C:\Anaconda\python.exe ENOENT
	at _errnoException (util.js:1024:11)
	at Process.__dirname.ChildProcess._handle.onexit (internal/child_process.js:190:19)
	at onErrorNT (internal/child_process.js:372:16)
	at _combinedTickCallback (internal/process/next_tick.js:138:11)
	at process._tickCallback (internal/process/next_tick.js:180:9) (at d.<anonymous> (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:83:286084))
t.log @ console.ts:134
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Hide locator refreshing progress, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: All locators have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))
console.ts:134 [Extension Host] Python Extension: Checking whether locactors have completed locating, , Return Value:  (at r.logInformation (C:\Users\rchiodo\.vscode-insiders\extensions\ms-python.python-2018.11.0-rc\out\client\extension.js:1:24943))

[DonJayamanne]

Can you try selecting a different python interpreter, then restarting VS Code.
Try something that's not Anaconda.

[rchiodo]

Same error with a non conda env.

[DonJayamanne]

Ok, please save the file to disc and the try

[rchiodo]

Yep works if I save the file.

[DonJayamanne]

Closing as this isn't supported

[rchiodo]

Jedi works in an unsaved file though? Seems like a weird discrepancy.

[rchiodo]

I'm assuming you meant to reopen this? Otherwise it won't show up on your board?

[DonJayamanne]

It is open :)

[MikhailArkhipov]

This is b/c file without extension '.py' is not considered to be Python in the LS and hence is not loaded. The fact that client sends it down anyway does not affect the behavior.

[DonJayamanne]

This is b/c file without extension '.py' is not considered to be Python in the LS and hence is not loaded.

However, the user has selected the file type in VSC.

I think this is an important feature, specially for data scientists or someone starting to code, e.g. sending code to a terminal (or jupyter).
I.e. important for experimenting, and users do that a lot with Python.

[DonJayamanne]

Discussed with @qubitron , this is required.

[luabud]

Fixed upstream (microsoft/python-language-server#597)