1、安装依赖
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
2、下载并解压缩
wget https://www.python.org/ftp/python/2.7.17/Python-2.7.17.tgz
tar -xvf Python-2.7.17.tgz
3、编译安装 ，一路回车安装完成
./configure --enable-optimizations
make
sudo checkinstall
安装位置：/usr/lib/python2.7
4、安装 PIP
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.pytar -xvf Python-2.7.17.tgz
5、显示版本信息
python –version
6、卸载 python
sudo dpkg -r python
