python将csv文件转为xml格式文件

import csv
from xml.dom.minidom import parse
import xml.dom.minidom

# names = ['Supplier_name', 'Invoice_number', 'part_number', 'cost', 'pucharse_date']
filename = 'object.csv'
with open(filename,encoding='gbk') as f:
    reader = csv.reader(f)
    header_row = next(reader)
    # for index,column_header in enumerate(header_row):
    #     print(index,column_header)

    doc = xml.dom.minidom.document()
    root_node = doc.createElement("root")
    doc.appendChild(root_node)
    elementattr_node = doc.createElement("elementattr")
    root_node.appendChild(elementattr_node)

    objectClass=""
    branch_node=""
    for row in reader:
        print(row)
        if(objectClass!=row[0]):
            branch_node = doc.createElement("elementclass")
            branch_node.setAttribute("CODE",row[0])
            branch_node.setAttribute("name",row[0])
            branch_node.setAttribute("defaultAttrType",row[4])
            objectClass=row[0]
            elementattr_node.appendChild(branch_node)
        folder_node = doc.createElement("eleattribute")
        folder_node.setAttribute("attcode",row[2] if row[2]!="" else row[1])
        folder_node.setAttribute("attname",row[2] if row[2]!="" else row[1])
        folder_node.setAttribute("pidattcode",row[1])
        folder_node.setAttribute("pidattdspname",row[2] if row[2]!="" else row[1])
        folder_node.setAttribute("atttype",row[5])
        print(folder_node)
        branch_node.appendChild(folder_node)


    with open("0002.xml", "w", encoding="utf-8") as f:
        # 4.writexml()第一个参数是目标文件对象，第二个参数是根节点的缩进格式，第三个参数是其他子节点的缩进格式，
        # 第四个参数制定了换行格式，第五个参数制定了xml内容的编码。
        doc.writexml(f, indent='', addindent='t', newl='n', encoding="utf-8")