If I disabled Prettier as the default formatter, it would not format on save anymore, but my Python would be formatted by autopep8 on save. With this in mind, the following solution worked for me to have both Prettier working for other languages and autopep8 for Python:

{
  "workbench.iconTheme": "vscode-icons",
  "workbench.editorAssociations": [
    {
      "viewType": "jupyter.notebook.ipynb",
      "filenamePattern": "*.ipynb"
    }
  ],
  "git.confirmSync": false,
  "editor.formatOnPaste": true,
  "editor.formatOnSave": true,
  "python.formatting.provider": "autopep8",
  "explorer.confirmDelete": false,
  "python.showStartPage": false,
  "explorer.confirmDragAndDrop": false,
  "python.linting.pylintArgs": ["--load-plugins=pylint_django"],
  "javascript.updateImportsOnFileMove.enabled": "always",
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "[python]": {
    "editor.defaultFormatter": "ms-python.python"
  }
}

Let me know if somebody finds a better solution!

Prettier doesn't officially support Python, you can use autopep8 or black instead. You can either install their extension or install them for one specific directory by:

1. Open .py file on vscode
2. Right-click on it, and choose Format document with...
3. Select Configure default formatter
4. It should ask to install a few formatters for Python, choose whichever one you prefer

The process will start automatically, when it's completed it will format your Python code every time you save it.