get_xml.py

import urllib
from BeautifulSoup import BeautifulStoneSoup

NUM = 1
url = 'http://www.hogehoge.com?'
params = {
    'param1':'para',
    'param2': 'para'
}

results = []
for i in range(0,NUM):
    try:
        req_url = url + urllib.urlencode(params)
        res = urllib.urlopen(req_url)
        soup = BeautifulStoneSoup(res.read())
        break

    except:
        continue

print soup.prettify()
links = soup.findAll('list_inf')
for link in links:
    print link["id"]
    print link