import pickle


def load_big_chunk(big_chunk_file_list):
    """
    :param big_chunk_file_list: a list of filenames, composing the big chunk
    :return: loaded big chunk, which is a list of chunks (one per filename)
    """
    chunks = []
    for file_name in big_chunk_file_list:
        with open(file_name, 'rb') as f:
            npz_data = pickle.load(f)
        chunks.append(npz_data)
    return chunks