A portion of pycon expenses are spent on outreach and teaching during the event. Arguably all of pycon is outreach. There are dedicated grants, aid, support as well. The 2019 PDF breakdown doesn't seem to be available any longer.

During the 2010s, the packaging group was begging for help. "We're only volunteers," a common refrain: https://news.ycombinator.com/item?id=46605018

During the 2020s, funding for packaging was provided by Mozilla and Chan-Zuck, as PSF wasn't doing enough. https://www.python.org/psf/annual-report/2019/

As we all know, Astral stepped in and solved the problem for them. I moved to their tools as soon as was possible. And not simply because they were fast, but because they work.

For example, here's one that pypa broke for my package a couple of years ago in pip, and never fixed: https://github.com/pypa/packaging/issues/774