Pandas was extensively rewritten since its first few versions, and its GitHub repo has 1500+ contributors now, so I doubt that Wes McKinney's initial lack of py

Pandas was extensively rewritten since its first few versions, and its GitHub repo has 1500+ contributors now, so I doubt that Wes McKinney's initial lack of python experience had much to do with the API rough spots of modern pandas. "Pre-2010 R" doesn't mean much to me, but I can confidently point out that pandas "looks like a weird mixture of numpy" because it is based heavily on numpy.