因为手贱，yum -y remove ***，删了yum，重新安装的时候遇到了问题。

./yummain.py install yum
Traceback (most recent call last):
  File "./yummain.py", line 27, in 
    from yum import Errors
  File "/home/huaxiaolong/yum-3.2.28/yum/__init__.py", line 42, in 
    import rpmsack
  File "/home/huaxiaolong/yum-3.2.28/yum/rpmsack.py", line 38, in 
    import yum.depsolve
  File "/home/huaxiaolong/yum-3.2.28/yum/depsolve.py", line 30, in 
    from transactioninfo import TransactionMember
  File "/home/huaxiaolong/yum-3.2.28/yum/transactioninfo.py", line 31, in 
    from sqlitesack import YumAvailablePackageSqlite
  File "/home/huaxiaolong/yum-3.2.28/yum/sqlitesack.py", line 26, in 
    import yumRepo
  File "/home/huaxiaolong/yum-3.2.28/yum/yumRepo.py", line 32, in 
    import sqlitecachec
ImportError: No module named sqlitecachec

sqlitecachec 这个模块需要安装哪个依赖包？网上查了很久都查不到。