fix: #2007 TypeError object of type 'Omit' has no len()

src/agents/models/openai_chatcompletions.py

@@ -290,30 +290,39 @@ async def _fetch_response(
 
         stream_param: Literal[True] | Omit = True if stream else omit
 
-        ret = await self._get_client().chat.completions.create(
-            model=self.model,
-            messages=converted_messages,
-            tools=tools_param,
-            temperature=self._non_null_or_omit(model_settings.temperature),
-            top_p=self._non_null_or_omit(model_settings.top_p),
-            frequency_penalty=self._non_null_or_omit(model_settings.frequency_penalty),
-            presence_penalty=self._non_null_or_omit(model_settings.presence_penalty),
-            max_tokens=self._non_null_or_omit(model_settings.max_tokens),
-            tool_choice=tool_choice,
-            response_format=response_format,
-            parallel_tool_calls=parallel_tool_calls,
-            stream=cast(Any, stream_param),
-            stream_options=self._non_null_or_omit(stream_options),
-            store=self._non_null_or_omit(store),
-            reasoning_effort=self._non_null_or_omit(reasoning_effort),
-            verbosity=self._non_null_or_omit(model_settings.verbosity),
-            top_logprobs=self._non_null_or_omit(model_settings.top_logprobs),
-            extra_headers=self._merge_headers(model_settings),
-            extra_query=model_settings.extra_query,
-            extra_body=model_settings.extra_body,
-            metadata=self._non_null_or_omit(model_settings.metadata),
-            **(model_settings.extra_args or {}),
-        )
+        request_kwargs: dict[str, Any] = {
+            "model": self.model,
+            "messages": converted_messages,
+            "tools": tools_param,
+            "temperature": self._non_null_or_omit(model_settings.temperature),
+            "top_p": self._non_null_or_omit(model_settings.top_p),
+            "frequency_penalty": self._non_null_or_omit(model_settings.frequency_penalty),
+            "presence_penalty": self._non_null_or_omit(model_settings.presence_penalty),
+            "max_tokens": self._non_null_or_omit(model_settings.max_tokens),
+            "tool_choice": tool_choice,
+            "response_format": response_format,
+            "parallel_tool_calls": parallel_tool_calls,
+            "stream": cast(Any, stream_param),
+            "stream_options": self._non_null_or_omit(stream_options),
+            "store": self._non_null_or_omit(store),
+            "reasoning_effort": self._non_null_or_omit(reasoning_effort),
+            "verbosity": self._non_null_or_omit(model_settings.verbosity),
+            "top_logprobs": self._non_null_or_omit(model_settings.top_logprobs),
+            "extra_headers": self._merge_headers(model_settings),
+            "extra_query": model_settings.extra_query,
+            "extra_body": model_settings.extra_body,
+            "metadata": self._non_null_or_omit(model_settings.metadata),
+        }
+
+        request_kwargs.update(model_settings.extra_args or {})
+
+        sanitized_kwargs = {
+            key: value
+            for key, value in request_kwargs.items()
+            if not isinstance(value, Omit) and value is not omit
+        }
+
+        ret = await self._get_client().chat.completions.create(**sanitized_kwargs)
 
         if isinstance(ret, ChatCompletion):
             return ret

tests/models/test_kwargs_functionality.py

@@ -1,6 +1,7 @@
 import litellm
 import pytest
 from litellm.types.utils import Choices, Message, ModelResponse, Usage
+from openai import Omit, omit
 from openai.types.chat.chat_completion import ChatCompletion, Choice
 from openai.types.chat.chat_completion_message import ChatCompletionMessage
 from openai.types.completion_usage import CompletionUsage
@@ -124,6 +125,9 @@ def __init__(self):
     # Verify regular parameters are still passed
     assert captured["temperature"] == 0.7
 
+    assert all(not isinstance(value, Omit) for value in captured.values())
+    assert omit not in captured.values()
+
 
 @pytest.mark.allow_call_model_methods
 @pytest.mark.asyncio

tests/test_openai_chatcompletions.py

@@ -5,7 +5,7 @@
 
 import httpx
 import pytest
-from openai import AsyncOpenAI, omit
+from openai import AsyncOpenAI, Omit, omit
 from openai.types.chat.chat_completion import ChatCompletion, Choice
 from openai.types.chat.chat_completion_chunk import ChatCompletionChunk
 from openai.types.chat.chat_completion_message import ChatCompletionMessage
@@ -283,19 +283,22 @@ def __init__(self, completions: DummyCompletions) -> None:
             stream=False,
         )
     assert result is chat
+
     # Ensure expected args were passed through to OpenAI client.
     kwargs = completions.kwargs
-    assert kwargs["stream"] is omit
-    assert kwargs["store"] is omit
     assert kwargs["model"] == "gpt-4"
     assert kwargs["messages"][0]["role"] == "system"
     assert kwargs["messages"][0]["content"] == "sys"
     assert kwargs["messages"][1]["role"] == "user"
-    # Defaults for optional fields become the omit sentinel
-    assert kwargs["tools"] is omit
-    assert kwargs["tool_choice"] is omit
-    assert kwargs["response_format"] is omit
-    assert kwargs["stream_options"] is omit
+    assert kwargs["messages"][1]["content"] == "hi"
+    assert "stream" not in kwargs
+    assert "store" not in kwargs
+    assert "tools" not in kwargs
+    assert "tool_choice" not in kwargs
+    assert "response_format" not in kwargs
+    assert "stream_options" not in kwargs
+    assert "parallel_tool_calls" not in kwargs
+    assert all(not isinstance(value, Omit) and value is not omit for value in kwargs.values())
 
 
 @pytest.mark.asyncio
@@ -340,8 +343,14 @@ def __init__(self, completions: DummyCompletions) -> None:
         )
     # Check OpenAI client was called for streaming
     assert completions.kwargs["stream"] is True
-    assert completions.kwargs["store"] is omit
-    assert completions.kwargs["stream_options"] is omit
+    assert completions.kwargs["model"] == "gpt-4"
+    assert "store" not in completions.kwargs
+    assert "stream_options" not in completions.kwargs
+    assert "tools" not in completions.kwargs
+    assert "parallel_tool_calls" not in completions.kwargs
+    assert all(
+        not isinstance(value, Omit) and value is not omit for value in completions.kwargs.values()
+    )
     # Response is a proper openai Response
     assert isinstance(response, Response)
     assert response.id == FAKE_RESPONSES_ID