black formatter doesn't take effect

[eromoe]

Environment data

• VS Code version: 1.49.1
• Extension version (available under the Extensions sidebar): latest
• OS and version: ubuntu 18.04 (remote-ssh)
• Python version (& distribution if applicable, e.g. Anaconda): miniconda 3.7.6
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
• Relevant/affected Python packages and their versions: 3.7.6

Expected behaviour

• ctrl + p -> Format Document
• format current file

Actual behaviour

• ctrl + p -> Format Document
• nothing happened

settings:

test on black 19.xx and 20.8b1 , both not working .

PS: Directly use black is fine

[eromoe]

How do I saw the detail of how python extension working ?
Just show a loading aniation ,

[karthiknadig]

@eromoe You can see the command it uses in Output > Python

Looks for black in that panel. Try and run that command from the terminal and see if it works.

[eromoe]

Oh , I understand what you mention, there is a python output .

[eromoe]

Command is :

> ~/.conda/envs/py3/bin/black "--line-length 200" --diff --quiet ~/sales_forecast/sales_forecast/src/timeseries/pd_func.py
cwd: ~/sales_forecast

It used --quiet by default ..

Remove --quiet and run in terminal got Error: no such option: --line-length 200 . Need remove double quote

---

Let me summarize:

1. Black Args should not be wrapped by double quote
2. --diff only print the difference , doesn't do reformation . It would print 1 file would be reformatted. and do nothing.
3. remove --quiet to print message

[karthiknadig]

@eromoe You have to set the arguments like this:

[eromoe]

OK .
I think this is not clear . I thought --line-length 200 is an argument .
You'd better put some example nearby .

[karthiknadig]

Since the settings issue is related to configuration UX, we are collecting all of these here #14092