The latest version of markdown-mode already support media handler for images and drag and drop images.

https://github.com/jrblevin/markdown-mode/commit/e10e5af

You need to to update to Emacs 29.1 or later version to use this new feature.

And the org-mode support will also coming soon.

https://list.orgmode.org/87a5s98x67.fsf@gmail.com/T/#m3c072c13b245eedd20241a84e7ee2efbde8dd88a

I use Emacs 29.1 or Emacs 30, because:

1. they have built in LSP support by Eglot.
2. they have built in tree-sitter support by python-ts-mode

And I use pyright as the LSP backend.

After install pyright, just start Emacs, open python file and M-x eglot will fire up the lsp support.

For the python virtual environment, I use envr(direnv)on macOS and Linux, use pyvenv on Windows platform.

You can see my personal configuration here:

https://github.com/Eason0210/.emacs.d/blob/6428e1a3be904a97ee354c955c879baeed90c099/init.el#L873-L948