用python查找指定格式或名称的文件及修改指定文件夹名称

#-*- coding: GBK -*- 
import os, sys, re 

newdir = "" 

#递归搜索函数 
def search(rootdir,searchdirname): 
        if os.path.isdir(rootdir): 
                #print rootdir 
                #分离路径和文件夹 
                split1 = os.path.split(rootdir) 
                #print split1[1] 

                #判断是否为指定的文件夹 
                if split1[1] == searchdirname: 
                        print "找到文件夹：%s" % (rootdir) 
                        try: 
                                #将文件夹名称改为新的文件夹名称 
                                os.rename(rootdir,split1[0]+"\\"+newdir) 
                                print "文件夹 [%s] 已改名为 [%s]" % (rootdir,newdir) 
                        except: 
                                pass 

                #遍历指定文件夹下的内容（文件和文件夹列表） 
                listnew = os.listdir(rootdir) 

                for l1 in listnew: 
                        path = rootdir + "\\" + l1 
                        #递归调用 
                        search(path,searchdirname) 
        else: 
                #print '不是文件夹：%s' % (rootdir) 
                return 
         
#搜索指定格式的文件         
def find_file_by_pattern(pattern,base):        
        '''''查找给定文件夹下面所有 '''     
        re_file = re.compile(pattern)        
        if base == ".":        
                base = os.getcwd()        
                        
        final_file_list = []        
        #print base        
        cur_list = os.listdir(base)        
        for item in cur_list:        
                print item 
                full_path = os.path.join(base, item)        
                if full_path.endswith(pattern):#不能写成单引号，单引号达不到预期的效果 
                # print full_path        
                        #bfile = os.path.isfile(item) 
                        if os.path.isfile(full_path): 
                             if re_file.search(full_path): 
                                     print re_file.search(full_path).group() 
                                     final_file_list.append(full_path)        
                        else:        
                             final_file_list += find_file_by_pattern(pattern,full_path) 
                #for filename in re_file.findall(final_file_list): 
                     # print filename 
                else: 
                        continue 
        return final_file_list 

def serchDir(startdir,dirname): 
        search(startdir,dirname) 
         
if __name__ == '__main__': 
        root=raw_input("输入搜索目录:") 
        key=raw_input("输入待搜索的文件夹名称:") 
        #newdir = raw_input("文件夹改名为：") 
        #serchDir(root,key) 
        base="".join([root,key]) 
        fileName=raw_input("请输入要查找的文件名称或后缀名:") 
        for result in find_file_by_pattern(fileName,base): 
                print result

if full_path.endswith(pattern):#不能写成单引号，单引号达不到预期的效果 
...... 
...... 
...... 
else: 
                        continue