python 之 xml

http://python101.pythonlibrary.org/chapter23_xml.html

ElementTree

创建

import xml.etree.ElementTree as xml
 
def createXML(filename):
    """
   Create an example XML file
   """
    root = xml.Element("zAppointments")
    appt = xml.Element("appointment")
    root.append(appt)
 
    # add appointment children
    begin = xml.SubElement(appt, "begin")
    begin.text = "1181251680"
 
    uid = xml.SubElement(appt, "uid")
    uid.text = "040000008200E000"
 
    alarmTime = xml.SubElement(appt, "alarmTime")
    alarmTime.text = "1181572063"
 
    state = xml.SubElement(appt, "state")
 
    location = xml.SubElement(appt, "location")
 
    duration = xml.SubElement(appt, "duration")
    duration.text = "1800"
 
    subject = xml.SubElement(appt, "subject")
 
    tree = xml.ElementTree(root)
    with open(filename, "wb") as fh:
        tree.write(fh)
 
 
if __name__ == "__main__":
    createXML("appt.xml")

解析

import xml.etree.cElementTree as ET
 
def parseXML(xml_file):
    """
   Parse XML with ElementTree
   """
    tree = ET.ElementTree(file=xml_file)
    print(tree.getroot())
    root = tree.getroot()
    print("tag=%s, attrib=%s" % (root.tag, root.attrib))
 
    for child in root:
        print(child.tag, child.attrib)
        if child.tag == "appointment":
            for step_child in child:
                print(step_child.tag)
 
    # iterate over the entire tree
    print("-" * 40)
    print("Iterating using a tree iterator")
    print("-" * 40)
    iter_ = list(tree.iter())
    for elem in iter_:
        print(elem.tag)
 
    # get the information via the children!
    print("-" * 40)
    print("Iterating using getchildren()")
    print("-" * 40)
    appointments = list(root)
    for appointment in appointments:
        appt_children = list(appointment)
        for appt_child in appt_children:
            print("%s=%s" % (appt_child.tag, appt_child.text))
 
if __name__ == "__main__":
    parseXML("appt.xml")
 
    state = xml.SubElement(appt, "state")
 
    location = xml.SubElement(appt, "location")
 
    duration = xml.SubElement(appt, "duration")
    duration.text = "1800"
 
    subject = xml.SubElement(appt, "subject")
 
    tree = xml.ElementTree(root)
    with open(filename, "wb") as fh:
        tree.write(fh)
 
 
if __name__ == "__main__":
    createXML("appt.xml")