Python怎么生成xml文件

from xml.dom.minidom import Document

doc = Document()

people = doc.createElement("people")

doc.appendChild(people)

aperson = doc.createElement("person")

people.appendChild(aperson)

name = doc.createElement("name")

aperson.appendChild(name)

personname = doc.createTextNode("Annie")

name.appendChild(personname)

filename = "people.xml"

f = open(filename, "w")

f.write(doc.toprettyxml(indent="  "))

f.close()