Ubuntu 14.04 更新Python3.6 记录
// 先update 一下1. sudo apt-get update2. sudo apt-get install software-properties-common python-software-properties -y// 执行这个命令可能会失败，若失败提示(W: Failed to fetch http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu/dists/trusty/main/binary-amd64/Packages 40
