http://www.crifan.com/python_mmseg_error_unable_to_find_vcvarsall_bat/
【已解决】安装Python模块mmseg出错：error: Unable to find vcvarsall.bat
http://my.oschina.net/zhangdapeng89/blog/54407
python---解决“Unable to find vcvarsall.bat”错误
http://stackoverflow.com/questions/2817869/error-unable-to-find-vcvarsall-bat#
Microsoft now provides a solution: microsoft.com/en-us/download/details.aspx?id=44266 – Martijn Pieters♦ Sep 30 '14 at 18:18
https://www.microsoft.com/en-us/download/confirmation.aspx?id=44266
有效 下载VCForPython27.msi