Maintaining Planet Python (https://planetpython.org):
Requests come in to the github issues (https://github.com/python/planet/issues)
Check the feed for validity using the services: https://validator.w3.org/feed/ or https://www.rssboard.org/rss-validator/
Check the feed for: Python-specific contents (often we have to ask for a Python specific feed), and English-language content (ask for an English-language feed).
Add the feed URL to a text config file (config/config.ini):
[http://example.org/feed/url/] name = Author/Group/Project Name
Sort the config file:
cd config python sort-ini.py
Commit the config file to the repo.
The Planet code is under the code/ directory. See code/README.pydotorg for details.