python遍历文件夹

import os
import re
import shutil
pathJiaoBen = r'C:UsersjjwDesktop601_英语沪教版九年级下册' #脚本
pathRtf = r'D:XiZhiContentSourceSVN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:UsersjjwDesktop601_英语沪教版九年级下册1_Unit1 Great exploration1_class_11_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。