>>> import sys >>> sys.path ['', '/usr/lib64/python26.zip', '/usr/lib64/python2.6', '/usr/lib64/python2.6/plat-linux2', '/usr/lib64/python2.6/lib-tk', '/usr/lib64/python2.6/lib-old', '/usr/lib64/python2.6/lib-dynload', '/usr/lib64/python2.6/site-packages', '/usr/lib64/python2.6/site-packages/gst-0.10', '/usr/lib64/python2.6/site-packages/gtk-2.0', '/usr/lib64/python2.6/site-packages/webkit-1.0', '/usr/lib/python2.6/site-packages']
将tab.py移动到sys.path任意目录下，''表示当前目录，执行python时所在的目录.
cat tab.py
#!/usr/bin/env python
import sys
import readline
import rlcompleter
import os
# tab completion
readline.parse_and_bind('tab: complete')
