How to set a keymap to insert an empty python code block?

[hopezh]

I'd like to ask how to config a keymap, e.g. <leader>op, to insert an empty python code block in a qmd file.

(I forgot how I set it a while ago...)

[jmbuhr]

I have some that also automatically split a chunk if the cursor currently already is in one:
https://github.com/jmbuhr/quarto-nvim-kickstarter/blob/6454aea43ffd613aa525e097d0d0cd099b7b3aad/lua/config/keymap.lua#L162