def check_interface_mapping(self):
        self.check_untagged_intersection()
        self.check_bond_slaves_speeds()
        self.check_vlan_ids_intersection()
        return self.err_msgs
Download the WMT en-fr training corpus to directory unless it's there.
dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/extensions/network_manager/checker.py/NetworkCheck.check_interface_mapping--crossover with--dataset/ETHPy150Open tokestermw/tensorflow-shakespeare/tensorshake/translate/data_utils.py/get_wmt_enfr_dev_set