Python 遍历文件夹和文件

import ?os import ?os.path # ?os,os.path里包含大多数文件访问的函数,所以要先引入它们. # ?请按照你的实际情况修改这个路径 rootdir? = ? " d:/download " for ?parent,?dirnames,?filenames? in ?os.walk(rootdir): ???? # case?1: ???? for ?dirname? in ?dirnames: ???????? print ?( " parent?is: " ? + ?parent) ???????? print ?( " dirname?is: " ? + ?dirname) ???? # case?2 ???? for ?filename? in ?filenames: ???????? print ?( " parent?is: " ? + ?parent) ???????? print ?( " filename?with?full?path?: " ? + ?os.path.join(parent,?filename)) ‘‘‘ 知识点: ????*?os.walk返回一个三元组.其中dirnames是所有文件夹名字(不包含路径),filenames是所有文件的名字(不包含路径).parent表示父目录. ????*?case1?演示了如何遍历所有目录. ????*?case2?演示了如何遍历所有文件. ????*?os.path.join(dirname,filename)?:?将形如"/a/b/c"和"d.java"变成/a/b/c/d.java". ‘‘‘