def create_friend_listeners_table(week):
dbfile = ("data/week_%d/" % week) + "friend_listeners.db"
db = DBWrapper(dbfile)
db.executescript("""
create table if not exists friend_listeners (
target_id,
track_id,
FriendsListenerNum
);
create table if not exists meta_info (
friend,
timestamp
);""")
db.commit()
return db
