摘自老外的解释http://lists.fedoraproject.org/pipermail/users/2009-August/087219.html
It seems i have two python2.6 folders located in /usr/lib vs
/usr/lib64 respectively. Most python stuff (source) is in/usr/lib64/python2.6 but when in installed packages they have been
put into /usr/lib/python2.6
Architecture-dependent python modules go in /usr/lib64/python*, while
architecture-independent modules go in /usr/lib/python*. Python'smodule path checks both for modules when importing.
总的意思就是:
如果你的库是架构独立的,那么就放到/usr/lib/python2.6 下
如果你的库不是架构独立的,那么放到/usr/lib64/python2.6下
放心好了,当你import时
python会连这2个路径一起搜索的