Via rasbt/watermark:
%watermark -v -m -p numpy,pandas,sklearn,xgboost
CPython 3.6.0
IPython 6.0.0
numpy 1.12.1
pandas 0.20.1
sklearn 0.18.1
xgboost 0.6
compiler : GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)
system : Darwin
release : 15.6.0
machine : x86_64
processor : i386
CPU cores : 4
interpreter: 64bit