代码：

[root@oracle-cluster-3 python]# python -V
Python 2.7.5
[root@oracle-cluster-3 python]# 
[root@oracle-cluster-3 python]# pwd
/script/python
[root@oracle-cluster-3 python]# 
[root@oracle-cluster-3 python]# ls -ltr
total 4
-rw-r--r-- 1 root root 124 May 12 10:33 isDirectory.py
[root@oracle-cluster-3 python]# 
[root@oracle-cluster-3 python]# cat isDirectory.py 
import os

if os.path.isdir("/script"):
   print "dir /script is direcotry."
else:
   print "dir /script is not direcotry."
[root@oracle-cluster-3 python]# 
[root@oracle-cluster-3 python]# python isDirectory.py 
dir /script is direcotry.
[root@oracle-cluster-3 python]#

————————————
Done。