def are_friends(self, user1, user2):
        friendship = Friendship.objects.get(user=user1)
        return bool(friendship.friends.filter(user=user2).exists())
Given the command-line arguments, this figures out which subcommand is
dataset/ETHPy150Open muhuk/django-simple-friends/friends/models.py/FriendshipManager.are_friends--crossover with--dataset/ETHPy150Open limodou/uliweb/uliweb/core/commands.py/CommandManager.execute