win7下 pip install robotframework-sshlibrar时提示：
error: Microsoft Visual C++ 9.0 is required (Unable to find vcvarsall.bat). Get it from http://aka.ms/vcpython27
解决办法：安装Micorsoft Visual C++ Compiler for Python 2.7
下载地址：http://www.microsoft.com/en-us/download/details.aspx?id=44266
pip install robotframework-sshlibrary提示： Microsoft Visual C++ 9.0 is required
原文：http://www.cnblogs.com/heaven1025/p/4651440.html