> I can write typical data-wrangling code at close to the speed of typing in ruby. In Python it takes forever, and I notice how every fibre of my soul tries to avoid even looking at it, much less enjoying and wanting to learn.

See I can say the same thing in reverse. I suspect it's just frustrating that once you know one of the two well, the other just dosen't do enough different to be worth learning as much. They have plenty of differences in the specifics but they're incredible similar in the domains they shine in. Similarly between Java and C#.

Add to that the fact that Python is now so established and used so many domains that the package availability that it attracts so many more people as a first language.

That said, I do do have reasons I prefer python, though I doubt they're solely why it "won". Idiomatic Python is just much clearer and more straight forward for most. They explicitly spent time to minimize how many language concepts and constructs you need to get basic things done. Compare:

some_list.each do |this_item| puts this_time end

for this_item in some_list: print(this_time)

The syntax/grammar are often more regular, use keywords and fewer symbols, and optional bits. Python went through a heavy monkey-patching phase (that's all but rejected now) but never went full blown DSL-style like Ruby. I'd say they both gained popularity being fun to write languages but Python stayed a but more balanced in readability.

ps: parens are better on function calls. fight me.