Discogs API Get Albums

import requests
import lxml.html

def extract(el, css_sel):
    ms = el.cssselect(css_sel)
    return None if len(ms) != 1 else ms[0].text

def get_albums(aid):
    url = "http://www.discogs.com/artist/" + str(aid) + "?limit=500"
    r = requests.get(url, headers={'User-Agent': 'I wish your API was better?'})
    root = lxml.html.fromstring(r.text)
    albums = []

    for row in root.cssselect("#artist tr"):
        section = extract(row, "td h3")
        if section is not None:
            if section == "Albums": continue
            if section == "Singles & EPs": break

        id = row.get("data-object-id")
        type = row.get("data-object-type")
        title = extract(row, ".title a")
        formats = extract(row, ".title .format")
        year = extract(row, "td[data-header=\"Year: \"]")
        albums.append((id, type, title, formats, year))

    return albums

if __name__ == "__main__":
    for album in get_albums(99952):
        print album