LangGraph – Overview pip install -U langgraph from langgraph.graph import StateGraph, MessagesState, START, END def mock_llm(state:MessagesState): return("messages":[{"role":"ai", "content":"Hello World"}]) graph = StateGraph(MessagesState) graph.add_node("mock_llm", mock_llm) grapg.add_edge(START, "mock_llm") graph.add_edge("mock_llm", END) workflow = graph.compile() workflow.invoke({"messages":[{"role":"user", "content":"Hi"}]})

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