Добавлен solution.py

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2026-05-28 15:50:09 +00:00
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commit acff9abc70
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from typing import TypedDict langgraph
import json langchain
langchain-openai
import questionary questionary
from langgraph.graph import StateGraph rich
from langgraph.constants import START
from langgraph.types import interrupt, Command
from langgraph.checkpoint.memory import InMemorySaver
from langchain_openai import ChatOpenAI
from rich.console import Console
# ────────────────────── Состояние графа ──────────────────────
class State(TypedDict):
"""Состояние графа."""
story: str # Текст истории, генерируемый LLM
options: list[str] # Варианты действий
choice: str | None # Выбор пользователя
ending: str | None # Концовка
# ────────────────────── Инструмент LLM ──────────────────────
llm = ChatOpenAI(model="gpt-4o-mini", temperature=0.7)
console = Console()
def generate_story(state: State) -> State:
"""Генерирует начало истории и варианты действий."""
prompt = (
"Generate a short adventure intro and three choices in JSON format.\n"
"The JSON should have keys 'intro' (string) and 'choices' (list of strings)."
)
response = llm.invoke({"messages": [{"role": "system", "content": prompt}]}).content
data = json.loads(response)
state["story"] = data["intro"]
state["options"] = data["choices"]
# Пауза для выбора игрока
return interrupt(state, {
"type": "choice",
"question": f"{state['story']}\nВыберите действие:",
"options": state["options"],
})
def finish_story(state: State) -> State:
"""Генерирует окончание истории на основе выбранного варианта."""
prompt = (
f"Write an ending for the story based on the choice '{state['choice']}'. "
"Keep it concise and satisfying."
)
response = llm.invoke({"messages": [{"role": "system", "content": prompt}]}).content
state["ending"] = response
return state
# ────────────────────── Граф ──────────────────────
builder = StateGraph(State)
builder.add_node("generate", generate_story)
builder.add_node("finish", finish_story)
builder.set_entry_point("generate")
builder.add_edge(START, "generate")
builder.add_conditional_edges(
"generate",
lambda x: True if x.get("choice") else None,
{True: "finish"},
)
builder.add_edge("finish", START) # цикл можно завершить здесь
graph = builder.compile(checkpointer=InMemorySaver())
# ────────────────────── Запуск и обработка прерываний ──────────────────────
def main() -> None:
thread_id = "interactive_story"
init_state: State = {"story": "", "options": [], "choice": None, "ending": None}
config = {"configurable": {"thread_id": thread_id}}
# Запускаем поток генерации
stream = graph.stream(Command(resume=init_state), config=config)
for chunk in stream:
if "__interrupt__" in chunk:
payload = chunk["__interrupt__"][0].value
answer = questionary.select(
payload["question"],
choices=payload["options"],
).ask()
if answer is None:
raise RuntimeError("Пользователь отменил ввод.")
# Возобновляем граф с выбранным вариантом
stream = graph.stream(Command(resume={"choice": answer}), config=config)
continue
# Выводим сообщения от LLM
if "story" in chunk and chunk["story"]:
console.print(f"[bold cyan]История:[/]\n{chunk['story']}")
if "ending" in chunk and chunk["ending"]:
console.print(f"\n[bold green]Концовка:[/]\n{chunk['ending']}")
# После завершения выводим итоговую историю
final_state = graph.get_state(config=config)
full_story = f"{final_state['story']}\n\n{final_state['ending']}"
console.print("\n[bold magenta]Итоговая история:[/]\n" + full_story)
if __name__ == "__main__":
main()