1、卸载python3.4
sudo apt-get remove python3.4
2、卸载python3.4及其依赖
sudo apt-get remove --auto-remove python3.4
3、清除python3.4
sudo apt-get purge python3.4 or sudo apt-get purge --auto-remove python3.4
完全卸载python for Ubuntu 14.04
原文：http://www.cnblogs.com/songfucai/p/7976623.html
