LangChainで設計するエージェント型システム
Dilini K. Sumanapala, PhD
Founder & AI Engineer, Genverv, Ltd.
User: Where is the Congo?Agent: 詳細を確認します...Agent: AIMessage([ツール呼び出し: Google Maps] 「the Congo」を検索中)Agent: コンゴ民主共和国は 中部アフリカの国です。
# ユーザー入力に基づきチャットボットを実行する関数を定義 def stream_graph_updates(user_input: str):# ユーザー入力でグラフのイベントをストリーム開始 for event in graph.stream({"messages": [("user", user_input)]}):# チャットボットのノード応答を取得して出力 for value in event.values(): print("Agent:", value["messages"])# ユーザーの質問を定義して実行 user_query = "Who is Mary Shelley?" stream_graph_updates(user_query)
Agent: [AIMessage(content='Mary Shelley (1797-1851) was an English novelist......best known for her groundbreaking work in the Gothic genre, particularly for her novel "Frankenstein; or, The Modern Prometheus," published in 1818. This novel is often considered one of the earliest examples of science fiction and explores themes of creation, responsibility, and the nature of humanity through the story of Victor Frankenstein, a scientist who creates a sentient creature in an unorthodox experiment...',response_metadata={'finish_reason': 'stop', 'model_name': 'gpt-4o-mini-...')]
Agent: [AIMessage(content='Judith
Love Cohen was an American aerospace
engineer, and worked on various
space missions, including the Apollo
program... Cohen was also the mother
of actor and writer Adam Cohen,
who has spoken about her influence on
his life and career.
additional_kwargs={},
response_metadata={'finish_reason':
'stop', 'model_name':
'gpt-4o-mini-...)
# チャットボット図のためのモジュールをインポート from IPython.display import Image, display# グラフ図の生成と表示を試す try: display(Image(graph.get_graph() .draw_mermaid_png()))
# 必要に応じて例外を返す
except Exception:
print("追加の依存関係が必要です。")

LangChainで設計するエージェント型システム