Raise exceptions instead of asserts in xnli.py (#13945)

src/transformers/data/processors/xnli.py

@@ -47,9 +47,12 @@ class XnliProcessor(DataProcessor):
             text_a = line[0]
             text_b = line[1]
             label = "contradiction" if line[2] == "contradictory" else line[2]
-            assert isinstance(text_a, str), f"Training input {text_a} is not a string"
-            assert isinstance(text_b, str), f"Training input {text_b} is not a string"
-            assert isinstance(label, str), f"Training label {label} is not a string"
+            if not isinstance(text_a, str):
+                raise ValueError(f"Training input {text_a} is not a string")
+            if not isinstance(text_b, str):
+                raise ValueError(f"Training input {text_b} is not a string")
+            if not isinstance(label, str):
+                raise ValueError(f"Training label {label} is not a string")
             examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
         return examples
 
@@ -67,9 +70,12 @@ class XnliProcessor(DataProcessor):
             text_a = line[6]
             text_b = line[7]
             label = line[1]
-            assert isinstance(text_a, str), f"Training input {text_a} is not a string"
-            assert isinstance(text_b, str), f"Training input {text_b} is not a string"
-            assert isinstance(label, str), f"Training label {label} is not a string"
+            if not isinstance(text_a, str):
+                raise ValueError(f"Training input {text_a} is not a string")
+            if not isinstance(text_b, str):
+                raise ValueError(f"Training input {text_b} is not a string")
+            if not isinstance(label, str):
+                raise ValueError(f"Training label {label} is not a string")
             examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
         return examples