fix(needs_fixes): 1 исправлений, 1 отстояно — main.py

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+58 -65
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@@ -9,7 +9,7 @@ from langchain.agents.middleware import HumanInTheLoopMiddleware
from langgraph.checkpoint.memory import MemorySaver from langgraph.checkpoint.memory import MemorySaver
from langgraph.types import Command from langgraph.types import Command
# --- LLM ------------------------------------------------------------ # --- LLM initialization (OpenRouter) -------------------------------------------------
llm = ChatOpenAI( llm = ChatOpenAI(
model="openai/gpt-oss-20b:free", model="openai/gpt-oss-20b:free",
base_url="https://openrouter.ai/api/v1", base_url="https://openrouter.ai/api/v1",
@@ -17,23 +17,20 @@ llm = ChatOpenAI(
temperature=0.0, temperature=0.0,
) )
# --- Backend -------------------------------------------------------- # --- Backend setup -------------------------------------------------
backend = CompositeBackend([ backend = CompositeBackend([
LocalShellBackend(workspace_dir="./workspace"), LocalShellBackend(workspace_dir="./workspace"),
FilesystemBackend(), FilesystemBackend(),
]) ])
# --- Tool ------------------------------------------------------------ # --- Tool definition -------------------------------------------------
@tool @tool
def get_weather(city: str, date: str = "today") -> str: def get_weather(city: str, date: str) -> str:
"""Return a mock weather report for the given city and date.""" """Return a mock weather report for the given city and date."""
# In a real scenario this would call an external API.
return f"The weather in {city} on {date} is sunny with a high of 25°C." return f"The weather in {city} on {date} is sunny with a high of 25°C."
# --- Agent ---------------------------------------------------------- # --- Agent creation -------------------------------------------------
# DESIGN DECISION: Using HumanInTheLoopMiddleware with interrupt_on for get_weather
# NECESSITY: Middleware automatically pauses before tool execution and asks for approval.
# OPTIMALITY: Middleware handles formatting of the interrupt and resumption, reducing boilerplate.
# ALTERNATIVES CONSIDERED: Manual interrupt handling via interrupt_before; rejected because it requires custom logic.
agent = create_deep_agent( agent = create_deep_agent(
model=llm, model=llm,
tools=[get_weather], tools=[get_weather],
@@ -48,65 +45,61 @@ agent = create_deep_agent(
checkpointer=MemorySaver(), checkpointer=MemorySaver(),
) )
# --- Helper functions ----------------------------------------------- # --- Helper functions -------------------------------------------------
async def invoke_agent(message: str, thread_id: str): async def prompt_user_for_decisions(action_requests, review_configs):
config = {"configurable": {"thread_id": thread_id}} decisions = []
result = await agent.ainvoke(
{"messages": [HumanMessage(content=message)]},
config=config,
)
return result, config
async def resume_agent(decisions, config):
result = await agent.ainvoke(Command(resume={"decisions": decisions}), config=config)
return result
def print_interrupt(interrupt):
action_requests = interrupt['action_requests']
review_configs = interrupt['review_configs']
print("\n--- Подтверждение ---")
for idx, action in enumerate(action_requests): for idx, action in enumerate(action_requests):
name = action.get("name") print(f"\n--- Подтверждение ---")
args = action.get("args") print(f"Инструмент: {action.get('name')}\n")
description = action.get("description", "") print(f"Аргументы: {action.get('args')}\n")
print(f"{idx+1}. Инструмент: {name}") if "description" in action:
print(f" Аргументы: {args}") print(f"Описание: {action['description']}\n")
if description: allowed = review_configs[idx].get("allowed_decisions", ["approve", "reject", "edit"])
print(f" Описание: {description}") prompt = f"a = approve, r = reject{', e = edit' if 'edit' in allowed else ''}: "
return action_requests, review_configs while True:
choice = input(prompt).strip().lower()
if choice == "a" and "approve" in allowed:
decisions.append({"type": "approve"})
break
elif choice == "r" and "reject" in allowed:
msg = input("Сообщение для агента (причина отказа): ")
decisions.append({"type": "reject", "message": msg})
break
elif choice == "e" and "edit" in allowed:
# Simple edit: ask for new JSON args
new_args = input("Введите отредактированные аргументы в формате JSON: ")
try:
import json
edited = json.loads(new_args)
decisions.append({"type": "edit", "edited_action": {"name": action['name'], "args": edited}})
break
except json.JSONDecodeError:
print("Неверный JSON. Попробуйте снова.")
else:
print("Неверный выбор. Попробуйте снова.")
return decisions
# --- Main interaction loop -------------------------------------------------
async def main(): async def main():
thread_id = "session-1" config = {"configurable": {"thread_id": "session-1"}}
while True: # Initial user message
user_input = input("Вы: ") user_input = input("Вы: ")
if not user_input: result = await agent.ainvoke(
continue {"messages": [HumanMessage(content=user_input)]},
result, config = await invoke_agent(user_input, thread_id) config,
# Loop until no interrupt )
while "__interrupt__" in result:
interrupt_value = result["__interrupt__"][0].value # Process possible interrupts
action_requests, review_configs = print_interrupt(interrupt_value) while "__interrupt__" in result:
decisions = [] interrupt = result["__interrupt__"][0].value
for idx, action in enumerate(action_requests): action_requests = interrupt.get("action_requests", [])
while True: review_configs = interrupt.get("review_configs", [])
choice = input("a = approve, r = reject: ").strip().lower() decisions = await prompt_user_for_decisions(action_requests, review_configs)
if choice == "a": result = await agent.ainvoke(Command(resume={"decisions": decisions}), config)
decisions.append({"type": "approve"})
break # Final answer
elif choice == "r": final_message = result["messages"][-1].content
msg = input("Сообщение для агента (причина отказа): ") print(f"\nАгент: {final_message}")
decisions.append({"type": "reject", "message": msg})
break
else:
print("Неверный ввод. Попробуйте снова.")
result = await resume_agent(decisions, config)
# No more interrupts print final answer
final_message = result["messages"][-1].content
print(f"\nАгент: {final_message}\n")
# Ask if user wants another query in the same session
again = input("Хотите задать ещё вопрос? (y/n): ").strip().lower()
if again != "y":
break
if __name__ == "__main__": if __name__ == "__main__":
asyncio.run(main()) asyncio.run(main())