将文件移动到指定目录下，并且加上时间戳进行重命名

    def add_timastamp(self):        ''' return timestamp mark'''        stamp = time.strftime("%Y%m%d%H%M%S",time.localtime())        return(stamp)    def rename_file(self,filename_without_timestamp):        '''add timestamp to filename'''        (file_without_suff,extention) = os.path.splitext(filename_without_timestamp)        stamp = self.add_timastamp()        file_add_timestamp = file_without_suff + stamp        file_with_timestamp =  file_add_timestamp + extention        # print filename_without_timestamp,file_with_timestamp        os.rename(filename_without_timestamp,file_with_timestamp)    def move_rename_file(self,filename):        '''move file to aimed path,then rename it by adding timestamp'''        filebak_path = os.path.join(PATH,"src_file","filebak")        if os.path.exists(filebak_path):            shutil.move(filename,filebak_path)            filename_without_path = os.path.split(filename)[1]#out.txt            filename_to_rename = os.path.join(filebak_path,filename_without_path)            self.rename_file(filename_to_rename)        else:            os.mkdir(filebak_path)            shutil.move(filename,filebak_path)            filename_without_path = os.path.split(filename)[0]            filename_to_rename = os.path.join(filebak_path,filename_without_path)            self.rename_file(filename_to_rename)

判断文件夹是否存在，若存在，则将该文件移动到文件夹下，若不存在，则新建文件夹并将文件移动到文件夹下。而重命名的操作是在移动后的文件夹中进行的。