This is way less than what uv and other package managers do:

- dev dependencies (or other groups) - distinguishing between direct and indirect dependencies (useful if you want to cut some fat from a project) - dependencies with optional extra dependencies (if you remove the main, it will delete the orphans when relevant)

It's not unachievable with pip and virtualenvs, but verbose and prone to human error.

Like C: if you're careful enough, it can be memory safe. But teams would rather rely on memory safe languages.