记录一次centos6.9升级python流程

centos6.9 默认 py是2.6的需要升级
百度下教程发现流程需要2篇以上才能凑齐答案
现在自己整理合并答案吧老人家了容易忘事写下后用（centos 也快Good bye 了应该还有机会吧。。。。）

1.下载python

wget https://www.python.org/ftp/python/2.7.15/Python-2.7.17.tgz
tar xvzf Python-2.7.18.tgz
cd Python-2.7.18
./configure --enable-optimizations 
make && make altinstall

安装完成路径是 /usr/local/bin/python2.7 -V

2.换2.6软连接

mv /usr/bin/python /usr/bin/python2.6.6 
ln -s /usr/local/bin/python2.7 /usr/bin/python

yum故障

sed -i 's/python/python2.6.6/' /usr/bin/yum

网上教程到这部分基本就乱了或者完了，更新pip的写的有点乱~我整理吧

3.升级pip

wget http://peak.telecommunity.com/dist/ez_setup.py 
vi ez_setup.py

改http为https
https://pypi.python.org

sudo /opt/python27/bin/python ez_setup.py

wget https://bootstrap.pypa.io/pip/2.7/get-pip.py

python get-pip.py

mv /usr/bin/pip /usr/bin/pip2.6.6
ln -s /usr/local/bin/pip /usr/bin/pip

4.py2.7和配套pip升级完成