I am aware of J, but it seems to me that J is comparable to K, not Q/KDB+. If you want a python comparison, then K is python, and Q/KDB+ is more like pandas. Except much, much quicker, and more powerful, but without as many tools and packages to support it. But that could be fixed - those tools and packages don't exist because the community isn't there, because it is (sadly) closed source.