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一、安装Python
1.第一种安装方式
sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python3.3设置Python 3.5为默认的命令:(Ubuntu16.04已安装Python2.7和Python3.5版本)
sudo cp /usr/bin/python /usr/bin/python_bak
sudo rm /usr/local/bin/python
sudo ln -s /usr/local/bin/python3.3 /usr/local/bin/python卸载Python 3.3命令:
sudo apt-get remove python3.5
2.第二种安装方式:ubuntu14.04下安装python3.4.2
参考文档