Install the below python packages for Python Code Format supporting in Windows

pip install autopep8

pip install pylint

Once you have successfully installed the packages, Open the code in vs code -> Press Ctrl + A and Ctrl + K, it will format the code.

Or simply install Black Formatter from VSC extension menu:

https://marketplace.visualstudio.com/items?itemName=ms-python.black-formatter

:)

Once VSCode Python's format feature came from the python package, VSCode now offers smarter and more customizable extensions.

autopep8 and Black formatter were provided by Microsoft.

Ruff and yapf were provided by community.

Once you install a formatter extension, you can select it as the default formatter for Python files in VS Code by following the steps below:

1. Open a Python file in VS Code.
2. Right-click on the editor to display the context menu.
3. Select Format Document With....
4. Select Configure Default Formatter... from the drop-down menu.
5. Select your preferred formatter extension from the list.

You could read document about Formatting in vscode-python for more details.

Enable "Format On Save" by setting

"editor.formatOnSave": true

And since version 1.49.0 editor.formatOnSaveMode has the option modifications that will just format the code you modified. Great when you change someone else code.

You can also set it just for one specific language:

"[python]": {
    "editor.tabSize": 4,
    "editor.insertSpaces": true,
    "editor.formatOnSave": true #
},

Since version 1.6.1, Vscode supports "Format On Save". It will automatically use a relevant installed formatter extension to format the whole document.

If you are modifying other users code and your team don't standardize a formatter, a nice option also is "editor.formatOnSaveMode": "modifications",. Unfortunately, the excellent black formatter does not support this feature.

There are only a few settings you need to setup black as a formatter on VS Code. It seems you got most of it right, but I am doubtful about using relative paths for blackPath (VS Code should have shown an error if the path is indeed incorrect).

I suggest switching to absolute paths.

Here are my settings:

// User Settings

"editor.defaultFormatter": null,
"editor.formatOnSave": false,  // enable per language
"[python]": {
    "editor.formatOnSave": true
},
"python.formatting.provider": "black",
"python.formatting.blackPath": "/usr/local/bin/black"

// Workspace Settings

"python.formatting.blackPath": "/absolute/path/to/venv/with/black",
"python.formatting.blackArgs": [
    "-l 120"
],

First of all, I suggest getting rid of the editor.defaultFormatter setting (or just set it back to the default null). Instead of setting a default for everything, configure your formatter for each language and for each extension. Here, it's null and then I configure python-specific settings then I have separate ones for other languages (ex. JS and C++). You mentioned something about Prettier, and that could be interfering with VS Code using black.

Second, make sure you are modifying the correct settings. VS Code has 3 sets of settings: User, Workspace, and Folder. I normally have the formatOnSave enabled for Python on the User settings, and provider set to black (using system-wide installed black). On a specific workspace, I have a virtual environment and I override the blackPath to the black specifically installed on that virtual environment. You can also just put all the settings in the User settings or use the same system-wide-installed black. But the main point here is to use absolute paths for both (basically copying the output of which black from the console).

Note that, if you specified blackPath to point to a particular virtual environment, make sure to select that same virtual environment on your workspace.

Lastly, you can check for any issues from the Output tab > Python: