Go for the largest community and biggest number of mature libraries, go for Python 3 (make sure it's 3!). It's the most mainstream in your list and for data sci

Go for the largest community and biggest number of mature libraries, go for Python 3 (make sure it's 3!). It's the most mainstream in your list and for data scientists it's your only choice I would also say (when looking at Tensorflow, Numpy, Scipy, Pandas etc.)