simple method to get tags for a given artist/track

lastm_tags.py

#!/usr/bin/env python
import urllib, urllib2, StringIO
from lxml import etree

apikey = 'YOUR APY KEY'

def getTags(artist,track) :
    params = urllib.urlencode([('method','track.gettoptags'), ('artist',artist),('track',track),('api_key',apikey)])
    url = 'http://ws.audioscrobbler.com/2.0/?' + params
    root = etree.parse(urllib2.urlopen(url))
    tags = []
    for x in root.xpath('/lfm/toptags/tag') :
        tagname = x.xpath('name')[0].text
        tagcount = x.xpath('count')[0].text
        tags.append((tagname, int(tagcount)))
    return tags

for t,c in getTags('vasco rossi','albachiara') :
    print '%4d, %s' % (c,t)