python目录与文件名操作

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import os,re
import shutil 
import time

def search_OFD_old(my_pattern, diretory):
 try:
 names = os.listdir(diretory) 
 except os.error:
 print "error"
 return
 for name in names:
 fullname = os.path.normpath(os.path.join(diretory, name))
 if os.path.isfile(fullname):
 result = my_pattern.search(name)
 if result and name.lower().endswith("txt"):
 shutil.copy(fullname, dest_dir) 
 elif os.path.isdir(fullname):
 search_OFD(my_pattern, fullname)

def search_OFD(my_pattern, diretory):
 for root,dirs,files in os.walk(diretory):
 for filename in files:
 result = my_pattern.search(filename)
 if result and filename.lower().endswith("txt"):
 fullname = os.path.join(root, filename)
 shutil.copy(fullname, dest_dir)

if not os.path.isdir(dest_dir):
 os.makedirs(dest_dir)

import re
pattern = re.compile("1ABC")
pattern.search(var)