>>> import lastfm
>>> profile = lastfm.user.profile_information("RJ")
>>> artists_xml = profile.top_artists(format=lastfm.FORMAT.xml)
>>> print artists_xml
<?xml version="1.0" encoding="UTF-8"?>
<topartists user="RJ">
<artist>
    <name>Dream Theater</name>
    <mbid>28503ab7-8bf2-4666-a7bd-2644bfc7cb1d</mbid>
    <playcount>837</playcount>
    <rank>1</rank>
    <url>http://www.last.fm/music/Dream+Theater</url>
    <thumbnail>http:///storable/image/153635/small.jpg</thumbnail>
    <image>http://static.last.fm/proposedimages/sidebar/6/4209/432600.jpg</image>
</artist>
....
<artist>
    <name>The Doors</name>
    <mbid>9efff43b-3b29-4082-824e-bc82f646f93d</mbid>
    <playcount>140</playcount>
    <rank>49</rank>
    <url>http://www.last.fm/music/The+Doors</url>
    <thumbnail>http:///storable/image/148057/small.jpg</thumbnail>
    <image>http://static.last.fm/proposedimages/sidebar/6/344/408886.jpg</image>
</artist>
</topartists>
>>>

>>> artists = profile.top_artists()
>>> artists
<<< <TopArtists username='RJ'>
>>> for artist in artists:
...     print artist.rank, artist.name
...     
...     
1 Dream Theater
2 Miles Davis
3 Aerosmith
>>>

>>> artists = lastfm.user.top_artists("RJ")
>>> artists
<<< <TopArtists username='RJ'>
>>>