I can use facepy to get my likes, and a list of my friends, but I haven't figured out how to get it to return a list of my friends' likes, sorted by friend, as for example, this returns using the graph explorer: https://developers.facebook.com/tools/explorer/?method=GET&path=1310493851%3Ffields%3Dfriends.fields%28likes%29
Here's what I have that gets my likes and lists of friends:
import json
from facepy import GraphAPI
graph = GraphAPI('access token')
my_likes = graph.get('me/likes')
friends = graph.get('me/friends/')
What call do I make to graph.get to get the lists of likes by my friends?