langchain-py

【设计与创意】Build and maintain production-grade LangChain Python systems (LangChain 1.3.x / LangGraph 1.2.x baseline) with create_agent, middleware, tools, structured output, and multi-agent architectures (subagents, handoffs, router, skills). Activate for Python agent design, debugging, migrations from older APIs, context engineering, and Tavily-backed web sear…

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