出现的问题如下：
Cannot uninstall 'dnspython'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
采用的方法是sudo pip install -U eventlet --ignore-installed dnspython
然后一切就OK了
总结：当出现linux安装KKK程序时出现Cannot uninstall XXX. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
最合理的做法是：pip install KKK --ingore-install XXX
参考链接：https://blog.csdn.net/jessican_uestc/article/details/80849625