convert assertion to raised exception in debertav2 (#17619)

* convert assertion to raised exception in debertav2

* change assert to raise exception in deberta

* fix messages

src/transformers/models/deberta/modeling_tf_deberta.py

@@ -778,7 +778,8 @@ class TFDebertaEmbeddings(tf.keras.layers.Layer):
         Returns:
             final_embeddings (`tf.Tensor`): output embedding tensor.
         """
-        assert not (input_ids is None and inputs_embeds is None)
+        if input_ids is None and inputs_embeds is None:
+            raise ValueError("Need to provide either `input_ids` or `input_embeds`.")
 
         if input_ids is not None:
             inputs_embeds = tf.gather(params=self.weight, indices=input_ids)

src/transformers/models/deberta_v2/modeling_tf_deberta_v2.py

@@ -876,7 +876,8 @@ class TFDebertaV2Embeddings(tf.keras.layers.Layer):
         Returns:
             final_embeddings (`tf.Tensor`): output embedding tensor.
         """
-        assert not (input_ids is None and inputs_embeds is None)
+        if input_ids is None and inputs_embeds is None:
+            raise ValueError("Need to provide either `input_ids` or `input_embeds`.")
 
         if input_ids is not None:
             inputs_embeds = tf.gather(params=self.weight, indices=input_ids)