Put python files in standard python directories.

[dseomn]

.local/bin/dconf-load-yaml sets PYTHONPATH manually, which is easy for a single script to do. If/when I add other things that need to load my python files, it would probably make more sense to create symlinks to .local/lib/python3/site-packages in .local/lib/python3.*/site-packages. I.e., do something similar to what .local/lib/dotfiles/update.d/50-firefox does.