def parse_keys(client, keys):
    """parse_keys will take in a list of keys, either just single model key
    names, or lists with a model and specific identifier, and return
    client.key objects
    """
    for key in keys:
        if isinstance(key, list):
            keys.append(client.key(key[0], key[1]))
        else:
            keys.append(client.key(key))
        return keys
