新mac (EI Capitan)，需要在python中使用xgboost，通过pip安装未成功。

配置pip

cat $HOME/Library/Application\ Support/pip/pip.conf

[global]

index-url = http://mirrors.aliyun.com/pypi/simple/

[install]

trusted-host = mirrors.aliyun.com

[download]

trusted-host = mirrors.aliyun.com

安装brew

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

brew install gcc --without-multilib

安装xgboost

https://xgboost.readthedocs.io/en/latest/build.html

python2

为了测试部分代码的兼容性，将系统自带的python，加到jupyter-notebook中

curl -O https://bootstrap.pypa.io/get-pip.py

sudo /usr/bin/python get-pip.py

/usr/bin/python -m pip install -U ipykernel  --user

/usr/bin/python -m ipykernel install