Wouldn't it be better to have a Python statistics library instead of creating a new language? When I looked at the documentation of R it looked very convoluted and it seems that my feeling is confirmed by other comments in this thread.
R style DataFrames was raison d'etre of Pandas in the first place. (http://pandas.pydata.org/#why-not-r)
Since then, R has gained a huge number of statistics packages. Python has fewer of them.