These python files are required to be able to use my custom UltiSnips snippets, which can be found here.
Here's how you install it:
cd ~/.config/nvim;
git submodule add --name "pythonx" https://github.com/SingularisArt/snippet-dependencies pythonx
After that, this is how your nvim folder should look like:
├── init.lua
├── LICENSE
├── lua
│ └── SingularisArt
│ ├── vimtex.lua
│ └── ...
├── pythonx (This folder is this submodule)
├── README.md
└── UltiSnips
├── xml.snippets
└── ...