Ask HN: Why aren't there more Python in-person courses?

Sorry if the wording is confusing, not sure how else to title this. I don't mean formal Universities (like MIT which has a course in Python, etc). Referring more to the likes of DevBootcamp, StarterLeague, etc...

I noticed (maybe incorrectly) that Python seems to be the most popular language discussed here as well as in a lot of the online education stuff (Coursera, Udacity, etc...) but when it comes to 12-week training in-person programs like the above, they are mostly or all Ruby. Is there a reason why there are more/all Ruby courses and no Python courses like them (as far as I can see) aside from maybe no one with Python chops is interested in running a DevBootcamp-like course or something, or am I totally missing something here?

Please no comments on language doesn't matter as much as programming principles (I get that at the end of the day). More curious as to why they all appear to be Ruby-centric.