lxml-example.py

#!/usr/bin/env python

from lxml import html
import argparse

def main(args):
    index = '/srv/portal/index.html'
    doc = html.parse(index)

    if args.property == 'link':
        selector = '//div[@id="{}"]//a'.format(args.application)
        node = doc.xpath(selector)[0]
        node.set('href', args.value)
    elif args.property == 'login':
        selector = '//div[@id="{}"]//span[@class="login"]'.format(args.application)
        node = doc.xpath(selector)[0]
        node.text = args.value
    elif args.property == 'password':
        selector = '//div[@id="{}"]//span[@class="password"]'.format(args.application)
        node = doc.xpath(selector)[0]
        node.text = args.value

    doc.write(index, encoding='utf-8', method='html')

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Portal property replacement tool')
    parser.add_argument('application', help='Application OD')
    parser.add_argument('property', choices=['link', 'login', 'password'], help='Property to change')
    parser.add_argument('value', help='New value of the property')
    main(parser.parse_args())