As the name of this theme states, I have only looked at Rust code to check if it has the same colors as in Obsidian.
Other languages might look off in the current version (though Python seems OK).
Installation
Open Extensions sidebar panel in VS Code. View → Extensions
Search for Obsidian Dark Theme (Rust syntax optimized) - find the one by dwrolvink - there maybe other ones with the same name so make sure you have the right one!
Click Install to install it.
Click Reload to reload the your editor
Code > Preferences > Color Theme > Obsidian Dark Theme (Rust syntax optimized)