padron_chile_2016.py

# Descargar archivos.xml desde http://www.servel.com/archivos.xml
import xml.etree.ElementTree as ET
import urllib2, os, sys

def progress(nregion, comuna, download, response, chunk_size=8192, report_hook=None):
    total_size = float(response.headers["Content-Length"])
    bytes_size = 0.0
    data = []

    while 1:
        chunk = response.read(chunk_size)
        bytes_size += len(chunk)

        if not chunk:
            break
        data += chunk
        if report_hook:

            report_hook(nregion, comuna, download, bytes_size, chunk_size, total_size)
    return "".join(data)

def report(nregion, comuna, download, bytes_size, chunk_size, total_size):
       percent = float(bytes_size) / total_size
       percent = round(percent*100, 2)
       sys.stdout.write("Descargando %s - %s - %s  %0.2f de %0.2f mb (%0.2f%%)\r" % (nregion, comuna, download, float(bytes_size/1000000), float(total_size/1000000), percent))

       if bytes_size >= total_size:
          sys.stdout.write('\n')

if __name__ == '__main__':
    tree = ET.parse('archivos.xml')
    root = tree.getroot()
    url = 'http://www.servel.cl/padron/'

    region = root.findall('Region')

    for s in region:
        idregion = s[0].text
        nregion = s[1].text
        for node in s.findall('comunas'):
            for c in node.findall('comuna'):
                comuna = c[0].text
                comuna.replace(" ","_")
                archcomuna = c[2].text
                download = url + archcomuna
                try:
                    opener = urllib2.build_opener()
                    opener.addheaders = [('User-Agent', 'Mozilla/5.0')]
                    response = opener.open(download)
                    folder = nregion.strip().replace(" ", "-")
                    if not os.path.exists(folder):
                        os.makedirs(folder)
                    pdf = open(folder +"/"+ comuna +".pdf",'wb')
                    pdf.write(progress(nregion, comuna, download, response, report_hook=report))
                    pdf.close()
                except urllib2.HTTPError, error:
                    print error.read()

Se podría descargar automáticamente archivos.xml