!python2

!coding:utf-8

import xml.etree.ElementTree as ET
def PrintXml(root):

print root.tag, root.attrib, root.text
for elem in root:
    PrintXml(elem)

def ReadAndIterXml(root):

print root.tag, root.attrib
for child in root:
    print child.tag, child.attrib
for neighbor in root.iter('neighbor'):
    print neighbor.attrib
for country in root.findall('country'):
    rank = country.find('rank').text
    name = country.get('name')
    print name, rank 

def ModifyXml(tree, root, filename):

for rank in root.iter('rank'):
    new_rank = int(rank.text) + 1
    rank.text = str(new_rank)
    rank.set('updated', 'yes')
for country in root.findall('country'):
    rank = int(country.find('rank').text)
    if rank > 50:
        root.remove(country)
tree.write(filename)

def CreateXml(filename):

root = ET.Element('data')
tree = ET.ElementTree(root)
country = ET.Element('country')
country.set("name", "Liechtenstein")
rank = ET.Element('rank')
rank.text = "1"
year = ET.Element('year')
year.text = "2008"
gdppc = ET.Element('gdppc')
gdppc.text = "141100"
neighbor1  = ET.Element('neighbor')
neighbor1.set("name", "Austria")
neighbor1.set("direction", "E")
neighbor2  = ET.Element('neighbor')
neighbor2.set("name", "Switzerland")
neighbor2.set("direction", "W")
country.append(rank)
country.append(year)
country.append(gdppc)
country.append(neighbor1)
country.append(neighbor2)
country2 = ET.Element('country')
country2.set("name", "Singapore")
rank = ET.Element('rank')
rank.text = "4"
year = ET.Element('year')
year.text = "2011"
gdppc = ET.[货币代码](https://www.gendan5.com/currencycode.html)Element('gdppc')
gdppc.text = "59900"
neighbor1  = ET.Element('neighbor')
neighbor1.set("name", "Malaysia")
neighbor1.set("direction", "N")
country2.append(rank)
country2.append(year)
country2.append(gdppc)
country2.append(neighbor1) 
country3 = ET.Element('country')
country3.set("name", "Singapore")
rank = ET.Element('rank')
rank.text = "68"
year = ET.Element('year')
year.text = "2011"
gdppc = ET.Element('gdppc')
gdppc.text = "13600"
neighbor1  = ET.Element('neighbor')
neighbor1.set("name", "Costa Rica")
neighbor1.set("direction", "W")
neighbor2  = ET.Element('neighbor')
neighbor2.set("name", "Colombia")
neighbor2.set("direction", "E")
country3.append(rank)
country3.append(year)
country3.append(gdppc)
country3.append(neighbor1)
country3.append(neighbor2) 
root.append(country)
root.append(country2)
root.append(country3)
Indent(root)
#PrintXml(root)
tree.write(filename, encoding='utf-8', xml_declaration=True)

def Indent(elem, level=0, isLast=True):

textIndent = "\n" + (level + 1)*"\t"
tailIndent = "\n" + level*"\t"
if isLast:
    tailIndent = "\n" + (level - 1)*"\t"
if len(elem) > 0 and elem.text is None:
    elem.text = textIndent
elem.tail = tailIndent
i = 0
length = len(elem)
for child in elem:
    i += 1
    Indent(child, level + 1, (i == length))

def main():

tree = ET.parse('ETreeRead.xml')
root = tree.getroot()
ReadAndIterXml(root)
ModifyXml(tree, root, "ETreeModify.xml")
CreateXml("ETreeCreate.xml")

if name == ‘__main__’:

main()