G:\Soft\python\word_cloud-master>python setup.py install
error: Microsoft Visual C++ 9.0 is required. Get it from http://aka.ms/vcpython27
本机已经安装了VS2015，可以通过增加以下环境变量来解决：
error: Microsoft Visual C++ 9.0 is required. Get it from http://aka.ms/vcpython27
原文：http://www.cnblogs.com/yshyee/p/6940347.html