import pickle


def read_model_for_each_class(pickle_file_name):
    """Reads models from Pickle file.

    :param pickle_file_name: Path to input file.
    :return: model_object_by_class: See documentation for
        `train_model_for_each_class`.
    """

    pickle_file_handle = open(pickle_file_name, 'rb')
    model_object_by_class = pickle.load(pickle_file_handle)
    pickle_file_handle.close()

    return model_object_by_class