Get total Bitcoin balance from blockexplorer.com

gistfile1.py

# need BeautifulSoup2
from BeautifulSoup import BeautifulSoup as bs

balance=0.0
for direccion in direcciones:
    sopa = bs(getter("http://blockexplorer.com/address/%s" % direccion))
    tabla = sopa.find("table", {"class":"txtable"})
    fila = tabla.findAll("tr")[-1]
    celdas = fila.findAll("td")
    if celdas != []:
        balance += float(celdas[-1].string)