yum update
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

/usr/local/lib/liblzma.so.5: version `XZ_5.1.2alpha' not found (required by /lib64/librpmio.so.3)

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7.5 (default, Nov 6 2016, 00:28:07)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)]

If you cannot solve this problem yourself, please go to
the yum faq at:
http://yum.baseurl.org/wiki/Faq
rpm 命令强制安装这个包也不行，rpm -ivh 也会报这个错误