如何批量删除VOC数据集中某个类别

按照下面的格式，一个一个的删除：

 
#  批量移除xml标注中的某一个类别标签
import xml.etree.cElementTree as ET
import os
 
 
path_root = ['VOC2007/Annotations']
 
CLASSES = ["crowd"]   # 填入想要删去的类别，每次删去一个类
 
for anno_path in path_root:
    xml_list = os.listdir(anno_path)
    for axml in xml_list:
        path_xml = os.path.join(anno_path, axml)
        tree = ET.parse(path_xml)
        root = tree.getroot()
        print("root",root)
 
        for child in root.findall('object'):
            name = child.find('name').text
            print("name",name)
            if name in CLASSES:     # 这里可以反向写，不在Class的删掉
                root.remove(child)
        # 重写
        
        tree.write(os.path.join('VOC2007/Annotations_new', axml))  # 记得新建annotations_new文件夹