When I started reading about pandas complexity and the smaller set of operations needed, couldn't help but think of R's data.table simplicity.
Granted, it's got more than 15 functions, but its simplicity seems to me very similar to what the author presented in the end.
Back when I used to use Stackoverflow, someone would always come along with a data.table solution when I asked a question about dplyr. The terse syntax seemed so foreign compared to the obvious verb syntax of dplyr. But then I learned data.table and I've never looked back. It's a superb tool!