注：以下所有操作均在CentOS 6.8 x86_64位系统下完成。
首先查看当前系统预装的python版本：
# whereis pythonpython2: /usr/bin/python2 /usr/bin/python2.6 /usr/lib/python2.6 /usr/lib64/python2.6 /usr/include/python2.6# pthyon --versionPython 2.6.6# cd /usr/bin# ls -l python*-rwxr-xr-x 2 root root 4864 Aug 18 2016 pythonlrwxrwxrwx 1 root root 6 Aug 24 2017 python2 -> python-rwxr-xr-x 2 root root 4864 Aug 18 2016 python2.6
系统默认安装的是python-2.6.6，由于2.6版本已经不再被支持，所以这里将其升级成2.7版本。
#安装python#
开始下载python并进行编译安装：
# wget https://www.python.org/ftp/python/2.7/Python-2.7.tgz# tar zxf Python-2.7.tgz# cd Python-2.7# ./configure --prefix=/usr/local/python-2.7# make && make install
然后配置环境替换默认的python-2.6：
# vim /etc/profile...export PY_HOME=/usr/local/python-2.7export PATH=$PY_HOME/bin:$PATH...# source /etc/profile# python --versionPython 2.7
重新指向python2的软链：
# rm -f /usr/bin/python2# ln -s /usr/local/python-2.7/bin/python /usr/bin/python2
至此，python安装完毕。
#安装pip#
首先查看当前的pip的版本：
# whereis pippip: /usr/bin/pip /usr/bin/pip2.6# pip --versionpip 9.0.1 from /usr/lib/python2.6/site-packages (python 2.6)
当前的pip是python2.6的，所以同样需要升级安装。
首先需要安装setuptools：
# wget https://files.pythonhosted.org/packages/72/c2/c09362ab29338413ab687b47dab03bab4a792e2bbb727a1eb5e0a88e3b86/setuptools-39.0.1.zip# unzip setuptools-39.0.1.zip# cd setuptools-39.0.1# python setup.py install...Installed /usr/local/python-2.7/lib/python2.7/site-packages/setuptools-39.0.1-py2.7.eggProcessing dependencies for setuptools==39.0.1Finished processing dependencies for setuptools==39.0.1
然后安装pip：
# wget https://files.pythonhosted.org/packages/e0/69/983a8e47d3dfb51e1463c1e962b2ccd1d74ec4e236e232625e353d830ed2/pip-10.0.0.tar.gz# tar zxf pip-10.0.0.tar.gz# cd pip-10.0.0# python setup.py install...Installed /usr/local/python-2.7/lib/python2.7/site-packages/pip-10.0.0-py2.7.eggProcessing dependencies for pip==10.0.0Finished processing dependencies for pip==10.0.0
然后配置环境替换默认的pip：
# which pip/usr/local/python-2.7/bin/pip# source /etc/profile# pip --versionpip 10.0.0 from /usr/local/python-2.7/lib/python2.7/site-packages/pip-10.0.0-py2.7.egg/pip (python 2.7)
至此，安装完成。