I\'m using the May 2018 Python extension (released June 2018) for VS Code 1.23.1 on Windows, python 3.6 via Anaconda, conda installing black from conda-forge into my conda e
The proper way to config in the Settings GUI pane is with --line-length and the desired value as separate items:
Visual Studio Code GUI Settings for Python Formatting
This converts into the settings.json into this:
Visual Studio Code JSON Settings for Python Formatting
"python.formatting.provider": "black",
"python.formatting.blackArgs": ["--line-length", "110"]