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#!/usr/bin/python
# coding=UTF-8
import os, sys
from os.path import getsize

def renameFiles(rootDir):
    lst = os.walk(rootDir)
    for root, dirs, files in lst:
        if len(dirs) !=0:
            for dir in dirs:
                subDir = os.path.join(root, dir)
                renameFiles(subDir)
        for file in files:
            path = os.path.join(root, file)
            for str in stripList:
                if str in file:
                    print(file)
                    os.rename(path, os.path.join(root,file.strip(str)))


rootdir = r'D:\dirty\B'
stripList = [‘’]
renameFiles(rootdir)