clean up

swarms/tools/main.py

@@ -28,7 +28,8 @@ class ToolScope(Enum):
 
 
 SessionGetter = Callable[[], Tuple[str, AgentExecutor]]
-openai_api_key = os.getenv["OPENAI_API_KEY"]
+
+openai_api_key = os.getenv("OPENAI_API_KEY")
 llm = ChatOpenAI(model_name="gpt-4", temperature=1.0, openai_api_key=openai_api_key)