python遍歷文件

import os
import os.path

rootdir = r"C:\Users\leiyi\Desktop\1"  # 指明被遍歷的文件夾
#要加上r，否則會報錯(unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape 錯誤
for parent, dirnames, filenames in os.walk(rootdir):  # 三個參數：分別返回1.父目錄 2.所有文件夾名字（不含路徑） 3.所有文件名字
    for dirname in dirnames:  # 輸出文件夾信息
        print("parent is:" + parent)

        print("dirname is" + dirname)


    for filename in filenames:  # 輸出文件信息
        print( "parent is:" + parent)

        print("filename is:" + filename)

        print( "the full name of the file is:" + os.path.join(parent, filename))
         # 輸出文件路徑信息