VSCode Function App debug cant find task 'func: host start'

Question

I am trying to locally debug a Azure Function App (Python) using VS Code in WSL, Ubuntu 22.04. Unfortunately though, debugging doesn't seem to work.

I have installed and following pre-requisites -

Azure extension (and logged in)
Azure Functions extension (and created a Function App project using Ctl, Shift + p -> Azure Functions: Create New Project...)
Installed azurite (and started using Ctl, Shift + p -> Azurite: Start)
Ensure local.settings.json is configured with "AzureWebJobsStorage": "UseDevelopmentStorage=true"

But when I try to debug using the launch configuration Attach to Python Functions from .vscode/launch.json (added when I created a Function App project), an error message is displayed.

Cound not find the task 'func: host start'.

Using Ctl, Shift + p and searching for 'func' does support that the task is missing.

However, on the CLI I can confirm that Azure Function App Tools is installed.

user@computer:~$ func --version
4.0.5198

I don't have the Python extension installed for two reasons -

It's already installed at the version I require through WSL.
Installing it makes the debugger not work - it just freezes and 'Python extension loading...' is displayed in the tool bar forever. Nothing is displayed in the 'Python' output. I have attempted the fix as described in this question, but it does not work.

How can I get a Function App to reliably debug using VS Code?

had the same problem which disappeared after a few updates of all and everything. For the debugging part I don't like VSCode at all so did that with spyder for code parts. I know it doesn't help. Just a hint it may be related to the installation — user3732793
– user3732793, Commented Jul 26, 2023 at 14:04
Does this answer your question? How to solve the problem"Python extension loading..." in visual studio code? — Kiran Shahi
– Kiran Shahi, Commented Jul 26, 2023 at 14:17
@KiranShahi, you mean the accepted solution that I had already referenced in my answer below? Yep! Thanks anyway. — David Gard
– David Gard, Commented Jul 27, 2023 at 8:50

David Gard · Accepted Answer · 2023-07-26 14:14:59Z

0

The issue was entirely because the Python extension was not installed.

As described in the question, I was unable to use the Python extension because it would not start, and the solutions I had tried failed to fix the extension.

Happily I have now found the answer in another Stack Overflow question. Simply disabling telemetry worked in user settings has worked.

"telemetry.telemetryLevel": "all|error|crash|off"

answered Jul 26, 2023 at 14:14

David Gard

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David Gard Over a year ago

I should add, after further investigation it seems that the telemetry was failing when being sent over my organisations corporate VPN.

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