passthrough dataset parser for dpo/grpo

src/axolotl/core/trainers/grpo/trainer.py

@@ -10,3 +10,5 @@ class AxolotlGRPOTrainer(SchedulerMixin, GRPOTrainer):
     """
     Extend the base GRPOTrainer for axolotl helpers
     """
+
+    _tag_names = ["trl", "grpo", "axolotl"]

src/axolotl/prompt_strategies/dpo/passthrough.py

@@ -0,0 +1,14 @@
+"""
+DPO prompt strategies passthrough/zero-processing strategy
+"""
+
+
+def default(
+    cfg, dataset_idx=0, **kwargs
+):  # pylint: disable=possibly-unused-variable,unused-argument
+    def transform_fn(
+        sample, tokenizer=None
+    ):  # pylint: disable=possibly-unused-variable,unused-argument
+        return sample
+
+    return transform_fn