Update rag_langgraph.py

rag_langgraph.py

@@ -26,10 +26,7 @@ class AgentState(TypedDict):
 def create_agent(llm: ChatOpenAI, tools: list, system_prompt: str):
     prompt = ChatPromptTemplate.from_messages(
         [
-            (
-                "system", 
-                system_prompt
-            ),
+            ("system", system_prompt),
             MessagesPlaceholder(variable_name="messages"),
             MessagesPlaceholder(variable_name="agent_scratchpad"),
         ]
@@ -98,7 +95,7 @@ def create_graph(topic, word_count):
     research_agent = create_agent(llm, [tavily_tool], f"Research content on topic {topic}, prioritizing research papers.")
     research_node = functools.partial(agent_node, agent=research_agent, name="Researcher")
     
-    blogger_agent = create_agent(llm, f"Write a {word_count}-word blog post on topic {topic}. Add a references section with research papers.")
+    blogger_agent = create_agent(llm, system_prompt=f"Write a {word_count}-word blog post on topic {topic}. Add a references section with research papers.")
     blogger_node = functools.partial(agent_node, agent=blogger_agent, name="Blogger")
     
     workflow = StateGraph(AgentState)