Update bc_eval.py

bc_eval.py

@@ -146,8 +146,8 @@ class BabelCodeEval(evaluate.Metric):
             for k in _QUESTION_INFO_KEYS
             if k not in list_keys
         }
-        question_info_type["test_case_ids"] = datasets.Value("string")
-        question_info_type["commands"] = datasets.Sequence(datasets.Value("string"))
+        question_info_type["test_case_ids"] = datasets.Sequence(datasets.Value("string"))
+        question_info_type["commands"] = datasets.Sequence(datasets.Sequence(datasets.Value("string")))
         question_info_type["timeouts"] = datasets.Sequence(datasets.Value("int32"))
 
         return evaluate.MetricInfo(