Extension does not load, stuck at "Python extension loading..."

Environment data

• VS Code version: 1.35.1
• Extension version (available under the Extensions sidebar): 2019.6.22090
• OS and version: xUbuntu 18.04
• Python version (& distribution if applicable, e.g. Anaconda): 2.7.15, 3.6.8
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): N/A
• Relevant/affected Python packages and their versions: XXX
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info #3977): Jedi enabled

Expected behaviour

Extension should load and function.

Actual behaviour

Remains stuck at “Python extension loading…”

Steps to reproduce:

1. Open a Python file in VS Code

Logs

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

"Python" does not appear in the drop-down

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help; turn on source maps to make any tracebacks be useful by running Enable source map support for extension debugging)

XXX

There are other issues similar to this one, but are marked closed. I assure you, this issue is not fixed, at least not on Linux.

[jeffbi]

Sorry for the delay. The extension started working suddenly (without changing any of the other extensions), and I have been too busy to try to put it into a failure state.

[bdeeming]

Did you also find the spinoff issue I opened (and resolved)? #5835 For me it was another VSCode extension, that was no longer maintained, being present on my system. I highly recommend physically removing all extensions from the extension directory apart from the python one and then see if you still have the problem behavior.