import pickle


def read_model(pickle_file_name):
    """Reads model from Pickle file.

    :param pickle_file_name: Path to input file.
    :return: model_object: Instance of `xgboost.XGBClassifier`.
    """

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

    return model_object