python遍历文件夹

import os
import re
import shutil
pathJiaoBen = r'C:\Users\jjw\Desktop\601_英语沪教版九年级下册' #脚本
pathRtf = r'D:\XiZhi\ContentSourceSVN\课文\初三年级下册\英语\601_英语沪教版九年级下册' #课文rtf
#C:\Users\jjw\Desktop\601_英语沪教版九年级下册\1_Unit1 Great exploration\1_class_1\1_预习\3_课文朗读

#for root1, dirs1, files1 in os.walk(path1):    #三个参数：分别返回1.父目录 2.所有文件夹名字（不含路径） 3.所有文件名字
for rootRtf, dirRtf, filesRtf in os.walk(pathRtf):
    for fileRtf in filesRtf:
        numUnit,numClass,other = fileRtf.split('-',2)
        rtf = os.path.join(rootRtf,fileRtf)
        #print (rtf)
        #print(numUnit+'..'+numClass)
        pathLangDu = r'\\.*年级.*\\'+numUnit +r'_.*\\'+numClass+r'.*\d\\1_预习\\3_课文朗读$'
        #print(pathLangDu)
        for rootJiaoBen, dirJiaoBen, filesJiaoBen in os.walk(pathJiaoBen):
            
            if re.findall(pathLangDu,rootJiaoBen):
                #print(rootJiaoBen)
                shutil.copy(rtf,rootJiaoBen+'\\' + '课文.rtf')
            '''else:
                print("未找到")'''
        

r''要用单引号，r=regular，使引号里的\不用转意。