CentOS保留Python2.6安装Python2.7并安装Pip

在保留系统Python2.6的情况下安装2.7，并为2.7的python安装pip。

1. 下载Python-2.7.4.tgz

wget http://python.org/ftp/python/2.7.4/Python-2.7.4.tgz

tar -xvf Python-2.7.4.tgz
cd Python-2.7.4
./configure --prefix=/usr/local/python2.7
make
make install

ln -s /usr/local/python2.7/bin/python2.7 /usr/bin/python27

python27 get-pip.py

ln -s /usr/local/python2.7/bin/pip /usr/bin/pip27