centos6带的是python2.6,需要python2.7自己编译：
源码下载地址：
https://www.python.org/downloads/release/python-2714/
cd /usr/local/src
wget https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgz
tar xf Python-2.7.14.tgz && cd Python-2.7.14
./configure --prefix=/usr/local/python2.7
make -j 4 && make install
配置环境PATH变量：
export PATH=/usr/local/python2.7/bin:$PATH
安装setuptools:
源码下载地址：
https://pypi.python.org/pypi/setuptools#downloads
cd /usr/local/src
wget https://pypi.python.org/packages/45/29/8814bf414e7cd1031e1a3c8a4169218376e284ea2553cc0822a6ea1c2d78/setuptools-36.6.0.zip#md5=74663b15117d9a2cc5295d76011e6fd1
unzip setuptools-36.6.0.zip cd setuptools-36.6.0
python setup.py install #此时python指令应该是来自上面编译安装的python2.7
安装pip:
源码下载地址：
https://pypi.python.org/pypi/pip
cd /usr/local/src
wget https://pypi.python.org/packages/11/b6/abcb525026a4be042b486df43905d6893fb04f05aac21c32c638e939e447/pip-9.0.1.tar.gz#md5=35f01da33009719497f01a4ba69d63c9
tar xf pip-9.0.1.tar.gz && cd pip-9.0.1
python setup.py install #此时python指令应该是来自上面编译安装的python2.7
