For xpath

mephi.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<university name="Mephi" metro="metro Kashirskoe" adress="Moscow,Kashirskoe shosse,31">
+ <faculty name="K">
+  <department name="Information tehnology">
+    <group name="361" entryyear="2012">
+      <student>Anisimova Natalia</student>
+      <student>Artemiev Dmitriy</student>
+      <student>Bubenko Kirill</student>
+      <student>Jelouhova Alena</student>
+      <student>Zamanov Aynur</student>
+      <student>Miheev Denis</student>
+      <student>Pivovarov Sasha</student>
+      <student>Samsonov Artem</student>
+      <student>Solovieva Anna</student>
+      <student>Sidorova Liubov</student>
+      <student>Tarmazakov Evgeniy</student>
+      <student>Titorenko Alexey</student>
+      <student>Shtaniko Sasha</student>
+    </group>
+  </department>
+ </faculty>
+</university>

programm_typing.py

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+#! /usr/bin/env python
+import sys, libxml2
+
+def open(mephi_xml):
+  doc = libxml2.parseFile(mephi_xml)
+  doc.freeDoc()
+
+def main(argv):
+  open(argv[1])
+  from xml.dom.minidom import *
+
+  xml = parse('mephi.xml')
+  name = xml.getElementsByTagName('student')
+
+for node in name:
+  print node.childNodes[0].nodeValue
+
+
+if __name__ == '__main__':
+  main(sys.argv)

validate_xml.py

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+#!/usr/bin/env python
+#-*- coding: UTF-8 -*-
+
+import optparse, libxml2
+
+def validate(xml_file, dtd_file):
+  doc = libxml2.parseFile(xml_file)
+  dtd = libxml2.parseDTD(None, dtd_file)
+  ctxt = libxml2.newValidCtxt()
+  ret = doc.validateDtd(ctxt, dtd)
+  dtd.freeDtd()
+  doc.freeDoc()
+  return ret
+
+def main():
+  op = optparse.OptionParser(description = U"Проверка на соответствие DTD", prog="dtd",version="0.1",usage=U"%prog")
+  op.add_option("-x", "--xml", dest="xml", help=U"XML документ", metavar="XML_FILE")
+  op.add_option("-d", "--dtd", dest="dtd", help=U"DTD document", metavar="DTD_FILE")
+  options, arguments = op.parse_args()
+  if options.xml and options.dtd:
+   validate(options.xml, options.dtd)
+  else:
+   op.print_help()
+
+if __name__ == '__main__':
+  main()

xpath.py

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+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+import sys, libxml2
+
+def open(xml_file, query):  
+  doc = libxml2.parseFile (xml_file) 
+  ctxt = doc.xpathNewContext()
+  students = ctxt.xpathEval(query)
+  print students
+  ctxt.xpathFreeContext()
+  doc.freeDoc()
+
+def main(argv):
+  queries = ["string(/university/faculty[@name='K']/*/attribute::name)",
+             "//group[@entryyear>='2012']/*",
+             "string(//group[child::student='Sidorova Liubov']/attribute::name)",
+             "count(//group[@name='361'][@entryyear='2012']/*)",
+             "count(//department[@name='Information tehnology']/descendant::student)",
+             "string(//faculty[child::department[@name='361']]/attribute::name)",
+             "concat(string(//faculty/attribute::name),string(1+2*(2014.0-number(//group/attribute::entryyear))),'-',string(//group/attribute::name))"]
+  for s in queries:
+    print s
+    print
+    open(argv[1], s)
+    print
+
+if __name__ == '__main__':
+    main(sys.argv)