Update DiaBLa.py

DiaBLa.py

@@ -102,8 +102,9 @@ class Diabla(datasets.GeneratorBasedBuilder):
                                       'user1', 'user2', 'translation_model',
                                       'final_evaluation_user1', 'final_evaluation_user2']
                 for info_to_remove in ['eval-stage', 'useragent']:
-                    del dialogue['user1'][info_to_remove]
-                    del dialogue['user2'][info_to_remove]
+                    for user in 'user1', 'user2':
+                        if info_t_remove in dialogue[user]:
+                            del dialogue[user][info_to_remove]
                 dialogue_info = {k: dialogue[k] for k in dialogue_info_keys}
                 # Main data: the utterances
                 for utterance_id in dialogue['utterances']: