[root@harbor opt]# rpm -ivh python27-2.7.9-1.x86_64.rpm
准備中... ################################# [100%]
file /usr/bin/python2.7 from install of python27-2.7.9-1.x86_64 conflicts with file from package python-2.7.5-76.el7.x86_64
file /usr/share/man/man1/python2.7.1.gz from install of python27-2.7.9-1.x86_64 conflicts with file from package python-2.7.5-76.el7.x86_64
file /usr/bin/python2.7-config from install of python27-2.7.9-1.x86_64 conflicts with file from package python-devel-2.7.5-76.el7.x86_64
file /usr/include/python2.7/pyconfig.h from install of python27-2.7.9-1.x86_64 conflicts with file from package python-devel-2.7.5-76.el7.x86_64
方法一
yum -y remove python-2.7.5-76.el7.x86_64
卸載掉沖突的文件，安裝新的文件。如果由於由於依賴關系導致要卸載很多軟件，那可以優先考慮下一個方法。
方法二
rpm -ivh python27-2.7.9-1.x86_64.rpm --replacefiles
安裝的時候增加--replacefiles參數，但是不知道在yum里如何實現。
--replacepkgs 強制重新安裝已經安裝的軟件包
--replacefiles 替換屬於其它軟件包的文件
rpm -e --nodeps python27-2.7.9-1.x86_64.rpm 強制刪除包