Based on Python XML format file example code details
- 2021-10-11 19:10:11
- OfStack
XML file is an extensible markup language, a simple data storage language designed to transmit and store data
Some Methods of XML in Python
Read files and contents
# Quote xml Module
from xml.etree import ElementTree as ET
# ET Go and open it xml Documents
tree = ET.parse("files/xo.xml")
# Get root label
root = tree.getroot()
print(root) # <Element 'data' at 0x7f94e02763b0>
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank updated="yes">2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank updated="yes">69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content) # Get root label
print(root) # <Element 'data' at 0x7fdaa019cea0>Read node data
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein" id="999" >
<rank>2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank>69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
# Get root label data
root = ET.XML(content)
country_object = root.find("country") # Get XML In the file country Label
print(country_object.tag, country_object.attrib)# Get country Label name Get country Attribute of label
gdppc_object = country_object.find("gdppc")# Get gdppc Label
print(gdppc_object.tag,gdppc_object.attrib,gdppc_object.text)# Get gdppc Name of the label Get gdppc Attribute ( There is no property for :{}) Get gdppc The contents of the label
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank>2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank>69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
# Get root label data
root = ET.XML(content)
# Get data Children's tags of tags
for child in root:
# child.tag = conntry Get two country Label
# child.attrib = {"name":"Liechtenstein"}
print(child.tag, child.attrib)
for node in child:
print(node.tag, node.attrib, node.text) # Get to reank Label
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank>2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank>69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content)
# Find children and grandchildren year Label
for child in root.iter('year'):
print(child.tag, child.text)
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank>2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank>69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content)
v1 = root.findall('country') # Find all the country Label
print(v1)
v2 = root.find('country').find('rank') # Find country In the tag rank Label
print(v2.text)Delete and modify nodes
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank>2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank>69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content)
# Modify node content and properties
rank = root.find('country').find('rank')
print(rank.text)
rank.text = "999" # Modify rank The contents of the label
rank.set('update', '2020-11-11') # For rank Tag addition 1 A update Attribute
print(rank.text, rank.attrib)
############ Save a file ############
tree = ET.ElementTree(root)
tree.write("new.xml", encoding='utf-8')
# Delete Node
root.remove( root.find('country') )
print(root.findall('country'))
############ Save a file ############
tree = ET.ElementTree(root)
tree.write("newnew.xml", encoding='utf-8')Build a document
<home>
<son name=" Children 1">
<grandson name=" Children 11"></grandson>
<grandson name=" Children 12"></grandson>
</son>
<son name=" Children 2"></son>
</home>
from xml.etree import ElementTree as ET
# Create root label
root = ET.Element("home")
# Create Node Elder Son
son1 = ET.Element('son', {'name': ' Children 1'})
# Create a youngest son
son2 = ET.Element('son', {"name": ' Children 2'})
# Create two grandchildren among the eldest son
grandson1 = ET.Element('grandson', {'name': ' Children 11'})
grandson2 = ET.Element('grandson', {'name': ' Children 12'})
son1.append(grandson1)
son1.append(grandson2)
# Add a son to the root node
root.append(son1)
root.append(son2)
tree = ET.ElementTree(root)
tree.write('oooo.xml', encoding='utf-8', short_empty_elements=False) #short_empty_elements Is it created as a short label
<famliy>
<son name=" Children 1">
<grandson name=" Children 11"></grandson>
<grandson name=" Children 12"></grandson>
</son>
<son name=" Children 2"></son>
</famliy>
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank updated="yes">2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank updated="yes">69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content) # Get root label
print(root) # <Element 'data' at 0x7fdaa019cea0>
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank updated="yes">2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank updated="yes">69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content) # Get root label
print(root) # <Element 'data' at 0x7fdaa019cea0>
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank updated="yes">2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank updated="yes">69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content) # Get root label
print(root) # <Element 'data' at 0x7fdaa019cea0>
<user><![CDATA[ Hello ]]</user>
from xml.etree import ElementTree as ET
content = """
<data>
<country name="Liechtenstein">
<rank updated="yes">2</rank>
<year>2023</year>
<gdppc>141100</gdppc>
<neighbor direction="E" name="Austria" />
<neighbor direction="W" name="Switzerland" />
</country>
<country name="Panama">
<rank updated="yes">69</rank>
<year>2026</year>
<gdppc>13600</gdppc>
<neighbor direction="W" name="Costa Rica" />
<neighbor direction="E" name="Colombia" />
</country>
</data>
"""
root = ET.XML(content) # Get root label
print(root) # <Element 'data' at 0x7fdaa019cea0>