使用正则表达式保留数字、字母和反斜杠\

# coding: utf8import hashlibimport osimport sysimport refrom collections import Counterreload(sys)sys.setdefaultencoding('utf-8')if __name__ == "__main__":    output_list=[]    output_path=os.getcwd()    for path,dir_list,file_list in os.walk(output_path) :          for dir_name in dir_list:            output_list.append(''.join(re.findall(r'[a-zA-Z0-9]|\\|:',os.path.join(path, dir_name)) ).replace(output_path, ""))    for i in output_list:        with open('counts_path.log', mode='a+') as f:            f.write(i+'\n')        print i