chore: add warning to function calling with chat_round

kani/kani.py

@@ -1,6 +1,7 @@
 import asyncio
 import inspect
 import logging
+import warnings
 import weakref
 from typing import AsyncIterable, Callable
 
@@ -124,12 +125,21 @@ async def chat_round(self, query: str, **kwargs) -> ChatMessage:
         :param kwargs: Additional arguments to pass to the model engine (e.g. hyperparameters).
         :returns: The model's reply.
         """
+        # warn if the user has functions defined and has not explicitly silenced them in this call
+        if self.functions and "include_functions" not in kwargs:
+            warnings.warn(
+                f"You have defined functions in the body of {type(self).__name__} but chat_round() will not call"
+                " functions. Use full_round() instead.\nIf this is intentional, use chat_round(...,"
+                " include_functions=False) to silence this warning."
+            )
+        kwargs = {**kwargs, "include_functions": False}
+        # do the chat round
         async with self.lock:
             # add the user's chat input to the state
             await self.add_to_history(ChatMessage.user(query.strip()))
 
             # and get a completion
-            completion = await self.get_model_completion(include_functions=False, **kwargs)
+            completion = await self.get_model_completion(**kwargs)
             message = completion.message
             await self.add_to_history(message)
             return message