问题：
[root@lgh ~]# yum There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: libldap-2.4.so.2: cannot open shared object file: No such file or directory Please install a package which provides this module, or verify that the module is installed correctly.
问题的产生（手贱使用了如下命令）：
rpm -e --nodeps openldap openldap-clients openldap-servers openldap-devel compat-openldap
解决方案：
下载如下一些包（我的系统是centos7的，一定要版本对应）
下载地址：http://rpmfind.net/linux/rpm2html/search.php?query=openldap&submit=Search+...&system=&arch= #通过搜索一一搜索
compat-openldap-2.3.43-5.el7.x86_64.rpm openldap-2.4.44-21.el7_6.x86_64.rpm openldap-clients-2.4.44-21.el7_6.x86_64.rpm openldap-devel-2.4.44-21.el7_6.x86_64.rpm openldap-servers-2.4.44-21.el7_6.x86_64.rpm
下载之后使用rpm命令安装每一个包
rpm -ivh --nodeps openldap-2.4.44-21.el7_6.x86_64.rpm openldap-servers-2.4.44-21.el7_6.x86_64.rpm openldap-clients-2.4.44-21.el7_6.x86_64.rpm compat-openldap-2.3.43-5.el7.x86_64.rpm openldap-devel-2.4.44-21.el7_6.x86_64.rpm
问题解决成功