Добавлен solution.py
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-115
@@ -1,115 +1,5 @@
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from typing import TypedDict
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import json
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import questionary
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from langgraph.graph import StateGraph
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from langgraph.constants import START
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from langgraph.types import interrupt, Command
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from langgraph.checkpoint.memory import InMemorySaver
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from langchain_openai import ChatOpenAI
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from rich.console import Console
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# ────────────────────── Состояние графа ──────────────────────
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class State(TypedDict):
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"""Состояние графа."""
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story: str # Текст истории, генерируемый LLM
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options: list[str] # Варианты действий
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choice: str | None # Выбор пользователя
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ending: str | None # Концовка
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# ────────────────────── Инструмент LLM ──────────────────────
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llm = ChatOpenAI(model="gpt-4o-mini", temperature=0.7)
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console = Console()
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def generate_story(state: State) -> State:
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"""Генерирует начало истории и варианты действий."""
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prompt = (
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"Generate a short adventure intro and three choices in JSON format.\n"
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"The JSON should have keys 'intro' (string) and 'choices' (list of strings)."
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)
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response = llm.invoke({"messages": [{"role": "system", "content": prompt}]}).content
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data = json.loads(response)
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state["story"] = data["intro"]
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state["options"] = data["choices"]
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# Пауза для выбора игрока
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return interrupt(state, {
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"type": "choice",
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"question": f"{state['story']}\nВыберите действие:",
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"options": state["options"],
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})
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def finish_story(state: State) -> State:
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"""Генерирует окончание истории на основе выбранного варианта."""
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prompt = (
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f"Write an ending for the story based on the choice '{state['choice']}'. "
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"Keep it concise and satisfying."
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)
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response = llm.invoke({"messages": [{"role": "system", "content": prompt}]}).content
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state["ending"] = response
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return state
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# ────────────────────── Граф ──────────────────────
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builder = StateGraph(State)
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builder.add_node("generate", generate_story)
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builder.add_node("finish", finish_story)
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builder.set_entry_point("generate")
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builder.add_edge(START, "generate")
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builder.add_conditional_edges(
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"generate",
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lambda x: True if x.get("choice") else None,
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{True: "finish"},
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)
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builder.add_edge("finish", START) # цикл можно завершить здесь
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graph = builder.compile(checkpointer=InMemorySaver())
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# ────────────────────── Запуск и обработка прерываний ──────────────────────
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def main() -> None:
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thread_id = "interactive_story"
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init_state: State = {"story": "", "options": [], "choice": None, "ending": None}
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config = {"configurable": {"thread_id": thread_id}}
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# Запускаем поток генерации
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stream = graph.stream(Command(resume=init_state), config=config)
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for chunk in stream:
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if "__interrupt__" in chunk:
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payload = chunk["__interrupt__"][0].value
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answer = questionary.select(
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payload["question"],
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choices=payload["options"],
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).ask()
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if answer is None:
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raise RuntimeError("Пользователь отменил ввод.")
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# Возобновляем граф с выбранным вариантом
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stream = graph.stream(Command(resume={"choice": answer}), config=config)
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continue
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# Выводим сообщения от LLM
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if "story" in chunk and chunk["story"]:
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console.print(f"[bold cyan]История:[/]\n{chunk['story']}")
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if "ending" in chunk and chunk["ending"]:
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console.print(f"\n[bold green]Концовка:[/]\n{chunk['ending']}")
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# После завершения выводим итоговую историю
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final_state = graph.get_state(config=config)
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full_story = f"{final_state['story']}\n\n{final_state['ending']}"
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console.print("\n[bold magenta]Итоговая история:[/]\n" + full_story)
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if __name__ == "__main__":
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main()
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langgraph
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langchain
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langchain-openai
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questionary
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rich
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