Fix poem generation example compatibility

Author: madiator

examples/poem-generation/simple_poem.py

@@ -8,12 +8,12 @@
 # Use GPT-4o-mini for this example.
 llm = curator.LLM(model_name="gpt-4o-mini")
 poem = llm(["Write a poem about the importance of data in AI."])
-print(poem.to_pandas().iloc[0]["response"])
+print(poem.dataset.to_pandas().iloc[0]["response"])
 
 # Use Claude 3.5 Sonnet for this example.
-llm = curator.LLM(model_name="claude-3-5-sonnet-20240620", backend="litellm")
+llm = curator.LLM(model_name="claude-sonnet-4-20250514", backend="anthropic")
 poem = llm(["Write a poem about the importance of data in AI."])
-print(poem.to_pandas().iloc[0]["response"])
+print(poem.dataset.to_pandas().iloc[0]["response"])
 
 # Note that we can also pass a list of prompts to generate multiple responses.
 poems = llm(

src/bespokelabs/curator/llm/llm.py

@@ -571,9 +571,11 @@ def _write_fast_path_failed_requests(
     return failed_requests_path
 
 
-def _is_message_list(list: list) -> bool:
+def _is_message_list(value: Any) -> bool:
     """Check if a list is a list of messages."""
-    return all(isinstance(item, dict) and "role" in item and "content" in item for item in list)
+    if not isinstance(value, list):
+        return False
+    return all(isinstance(item, dict) and "role" in item and "content" in item for item in value)
 
 
 def _raw_input_to_rows(raw_input) -> list[dict]: