petya
1fd7486a85
Each of the 122 code slides now has a standalone .py script in examples/slide-NNN/script.py with the LLM provider pattern from bro-js/agents/teacher/assistant/src/angry_teacher/llm.py: - load_dotenv() + ChatOpenAI with base_url=https://llm.brojs.ru/v1 - OPENAI_API_KEY from .env (with safe (or '' or None) pattern) - Same comment block with alternative model/base_url choices Layout: - sec1/sec5: code extracted from slide-NN.js (addCodeBlock) - sec2/sec3/sec4: code extracted from sectionN.pptx via python-pptx (JetBrains Mono font shapes) 100 scripts contain runnable code, 22 are visual-only (dividers, intro, recap) and just print the slide title. Setup: cp .env.example .env # fill OPENAI_API_KEY (or symlink to your # teacher/assistant/.env) pip install -r requirements.txt python examples/slide-005/script.py
67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
"""
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Slide 41: Slide 14
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Section 2: LangGraph 1.0
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Source: slides/section2-langgraph/section2.pptx
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Сгенерировано автоматически из slide-NN.js / sectionN.pptx.
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Паттерн провайдера скопирован из
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bro-js/agents/teacher/assistant/src/angry_teacher/llm.py.
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Запуск:
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cd langchain-evolution-deck
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cp .env.example .env # заполни OPENAI_API_KEY
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python examples/slide-041/script.py
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"""
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import os
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from dotenv import load_dotenv
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from langchain_openai import ChatOpenAI
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load_dotenv()
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llm = ChatOpenAI(
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# model="openrouter/free",
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# model="qwen/qwen3.5-35b-a3b",
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model="openai/gpt-oss-20b",
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# model="nvidia/nemotron-3-nano",
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# model="qwen/qwen3.5-9b",
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base_url="https://llm.brojs.ru/v1",
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# base_url="https://api.minimax.io/v1",
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# base_url="http://0.0.0.0:8090/v1",
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# base_url="https://openrouter.ai/api/v1",
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# api_key=os.getenv("MINIMAX_API_KEY"),
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api_key=(os.getenv("OPENAI_API_KEY") or "").strip() or None,
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temperature=0.7,
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stream_usage=True,
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)
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# === Code from slide 41 ===
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from typing import Annotated
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from typing_extensions import TypedDict
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from langgraph.graph import StateGraph, START, END
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from langgraph.graph.message import add_messages
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from langgraph.checkpoint.memory import InMemorySaver
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class State(TypedDict):
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messages: Annotated[list, add_messages]
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def echo(state: State):
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last = state["messages"][-1]
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return {"messages": [{"role": "assistant", "content": f"echo: {last.content}"}]}
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g = StateGraph(State)
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g.add_node("echo", echo)
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g.add_edge(START, "echo")
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g.add_edge("echo", END)
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# checkpointer -- обязателен для thread persistence
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checkpointer = InMemorySaver()
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app = g.compile(checkpointer=checkpointer)
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>
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> cfg = {"configurable": {"thread_id": "user-1"}}
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app.invoke({"messages": [{"role": "user", "content": "hi"}]}, cfg)
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> app.invoke({"messages": [{"role": "user", "content": "again"}]}, cfg)
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> # второй вызов видит все сообщения первого: thread persistence работает
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// note: snippet has 26 lines, card fits ~18
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