已有xml数据下新增单个类别（一条数据）

导包

from xml.etree.ElementTree import parse, Element
import os

新增单个类别的单条记录

save_Xml_Path = r'C:\Users\YYQ\Desktop\3'


tmp_1 = {
    'name': 'broom_dustpan',
    'pose': 'Unspecified',
    'truncated': '0',
    'difficult': '0',
    'bndbox': {
        'xmin': '1007',
        'ymin': '299',
        'xmax': '1100',
        'ymax': '488',
    }
}

解析xml

def parse_xml(fileName,dic):
    doc = parse(fileName)
    root = doc.getroot()
    element = Element('object')

    for i,v in dic.items():
        e = Element(i)
        if isinstance(v, str):
            e.text = v
        if isinstance(v, dict):
            for i1, v1 in v.items():
                e2 = Element(i1)
                e2.text = v1
                e.append(e2)
        element.append(e)
    root.append(element)
    name = fileName.split('\\')[-1]
    xml_name = save_Xml_Path + '/' + name
    # print(xml_name)
    doc.write(xml_name, xml_declaration=True)

主程序调用

filePath = r'C:\Users\YYQ\Desktop\2'
for i in os.listdir(filePath):
    fileName = os.path.join(filePath, i)
    print(fileName)
    parse_xml(fileName, tmp_1)