#修改並存入xml文檔
#修改卓水信的個人id_no = 999999
import xml.etree.ElementTree as xml
tree = xml.ElementTree(file='person.xml')
root = tree.getroot()

#顯示卓水信的資料
for elem in root.findall('student[name]'):
    if elem[1].text == '卓水信':
        print(elem[0].text,elem[1].text,elem[2].text)
    #修改卓水信的電話
        elem[2].text = "0912456789"
        print(elem[0].text,elem[1].text,elem[2].text)
    
#存檔person2.xml
tree.write('person2.xml')

#重新讀入，#顯示卓水信的資料
tree = xml.ElementTree(file='person2.xml')
root = tree.getroot()
for elem in root.findall('student[name]'):
    if elem[1].text == '卓水信':
         print(elem[0].text,elem[1].text,elem[2].text)