Gets the contacts (Users) for the user_id

def contacts_getPublicList(user_id):
    """Gets the contacts (Users) for the user_id"""
    method = 'flickr.contacts.getPublicList'
    data = _doget(method, auth=False, user_id=user_id)
    if isinstance(data.rsp.contacts.contact, list):
        return [User(user.nsid, username=user.username) \
                for user in data.rsp.contacts.contact]
    else:
        user = data.rsp.contacts.contact
        return [User(user.nsid, username=user.username)]