1.下载新版本的pythoncss
wget https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgzpython
解压 tar zxf Python-2.7.14.tgznginx
tar xf Python-2.7.14.tarsql
进入目录编译安装bootstrap
cd Python-2.7.14vim
sudo ./configure --prefix=/usr/local/python-2.7.14bash
编译：sudo make python2.7
检查编译是否是都okcurl
sudo make test测试
安装
sudo make install
安装以后检查一下当前python的版本：python --version
2.查看原有命令地址
列出系统下关于python的相关的文件：
ll -tr /usr/bin/python*
or ll -tr /usr/local/python*
结果
/usr/bin/python2.6-config
/usr/bin/python2.6
/usr/bin/python
/usr/bin/python2 -> python
/usr/bin/python-config -> python2.6-config
3.备份历史
sudo mv /usr/bin/python /usr/bin/python2.6.6
sudo mv /usr/bin/python-config /usr/bin/python2.6.6-config
4.配置新的
ln -s /usr/local/python-2.7.14/bin/python2.7 /usr/bin/python
ln -s /usr/local/python-2.7.14/bin/python2.7 /usr/bin/python2.7
ln -s /usr/local/python-2.7.14/bin/python-config /usr/bin/python-config
修改yum，(开头)#!/usr/bin/python的python改为python2.6
vim /usr/bin/yum
#!/usr/bin/python
import sys
try:
import yum
补充：
可是，这种改法，万一哪天你 yum update 了一下，yum 被升级了后，又变回老样子了。
因此，通过个人不懈琢磨和努力，发现了一个办法（网上的解决方案都是抄来抄去，没有一点卵用）。
记住旧版本 Python 2.6.6 的重要路径以下所示，在运行 yum 命令的时候，会提示你哪一个 module 不存在，
不存在的咱们就去旧版本的路径下找，必定能找到的。
找到后，复制到新版本 Python 的路径 /usr/local/lib/python2.7/site-packages/ 下便可。
/usr/lib/python2.6/site-packages/
/usr/lib64/python2.6/site-packages/
个人复制过程是这样的：
yes|cp -r /usr/lib/python2.6/site-packages/yum /usr/local/lib/python2.7/site-packages/
yes|cp -r /usr/lib/python2.6/site-packages/rpmUtils /usr/local/lib/python2.7/site-packages/
yes|cp -r /usr/lib/python2.6/site-packages/iniparse /usr/local/lib/python2.7/site-packages/
yes|cp -r /usr/lib/python2.6/site-packages/urlgrabber /usr/local/lib/python2.7/site-packages/
yes|cp -r /usr/lib64/python2.6/site-packages/rpm /usr/local/lib/python2.7/site-packages/
yes|cp -r /usr/lib64/python2.6/site-packages/curl /usr/local/lib/python2.7/site-packages/
yes|cp -p /usr/lib64/python2.6/site-packages/pycurl.so /usr/local/lib/python2.7/site-packages/
yes|cp -p /usr/lib64/python2.6/site-packages/_sqlitecache.so /usr/local/lib/python2.7/site-packages/
yes|cp -p /usr/lib64/python2.6/site-packages/sqlitecachec.py /usr/local/lib/python2.7/site-packages/
yes|cp -p /usr/lib64/python2.6/site-packages/sqlitecachec.pyc /usr/local/lib/python2.7/site-packages/
yes|cp -p /usr/lib64/python2.6/site-packages/sqlitecachec.pyo /usr/local/lib/python2.7/site-packages/
查看新的 Python 版本
python --version Python 2.7.14python --version Python 2.7.14为新版 Python 安装 setuptools
wget https://bootstrap.pypa.io/ez_setup.py -O - | python
curl -O -L https://pypi.python.org/packages/a9/23/720c7558ba6ad3e0f5ad01e0d6ea2288b486da32f053c73e259f7c392042/setuptools-36.0.1.zip#md5=430eb106788183eefe9f444a300007f0
unzip setuptools-36.0.1.zip#md5\=430eb106788183eefe9f444a300007f0
cd setuptools-36.0.1
python setup.py install
ln -sv /usr/local/python-2.7.13/bin/easy_install /usr/bin/easy_install
/usr/local/python-2.7.13/bin/easy_install pip
ln -sv /usr/local/python-2.7.13/bin/pip /usr/bin/pip
pip list
有时会不当心把第三方库的包给删了，操做以下：
mkdir /tmp/repair_python
cd /tmp/repair_python
apt-get download python2.7-minimal libpython2.7-minimal python-minimal python2.7
sudo dpkg -i --force-all *.deb
这以后就按照提示，把要装的python相关的用 sudo apt-get install name*
安装以后测试一下。可否正常使用。