add main.py

This commit is contained in:
2026-05-27 12:41:06 +00:00
parent a04b266cf0
commit 39506e6913
+13 -18
View File
@@ -4,8 +4,9 @@ from langchain.agents import create_agent
from langchain.agents.middleware import HumanInTheLoopMiddleware 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
from langchain.tools import tool
# LLM setup # LLM configuration
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",
@@ -13,19 +14,15 @@ llm = ChatOpenAI(
temperature=0.0, temperature=0.0,
) )
# Simple tool: get_weather # Simple weather tool
from langchain.tools import tool
@tool @tool
def get_weather(city: str, date: str = "сегодня") -> str: def get_weather(city: str, date: str = "сегодня") -> str:
"""Return a mock weather description for the given city and date.""" """Return a mock weather description for a city and date."""
# In a real scenario, call an API. Here we return a placeholder.
return f"Погода в {city} на {date}: солнечно, 25°C." return f"Погода в {city} на {date}: солнечно, 25°C."
# Memory for middleware # Agent with HumanInTheLoopMiddleware
memory = MemorySaver() memory = MemorySaver()
# Agent with HumanInTheLoopMiddleware
agent = create_agent( agent = create_agent(
model=llm, model=llm,
tools=[get_weather], tools=[get_weather],
@@ -33,7 +30,7 @@ agent = create_agent(
middleware=[ middleware=[
HumanInTheLoopMiddleware( HumanInTheLoopMiddleware(
interrupt_on={ interrupt_on={
"get_weather": True, # allow approve, edit, reject "get_weather": True,
}, },
description_prefix="Подтвердите вызов инструмента", description_prefix="Подтвердите вызов инструмента",
), ),
@@ -42,13 +39,12 @@ agent = create_agent(
) )
# Helper to process interrupt and get decisions # Helper to process interrupt and get decisions
def handle_interrupt(interrupt_value): def handle_interrupt(interrupt_value):
action_requests = interrupt_value["action_requests"] action_requests = interrupt_value["action_requests"]
decisions = [] decisions = []
for idx, action in enumerate(action_requests, 1): for idx, action in enumerate(action_requests, 1):
name = action.get("name") name = action.get("name")
args = action.get("args") args = action.get("args", {})
description = action.get("description", "") description = action.get("description", "")
print(f"\n--- Подтверждение {idx} ---") print(f"\n--- Подтверждение {idx} ---")
print(f"Инструмент: {name}") print(f"Инструмент: {name}")
@@ -61,7 +57,7 @@ def handle_interrupt(interrupt_value):
decisions.append({"type": "approve"}) decisions.append({"type": "approve"})
break break
elif choice == "r": elif choice == "r":
msg = input("Причина отказа: ") msg = input("Сообщение для агента (причина отказа): ")
decisions.append({"type": "reject", "message": msg}) decisions.append({"type": "reject", "message": msg})
break break
else: else:
@@ -72,10 +68,10 @@ def handle_interrupt(interrupt_value):
if __name__ == "__main__": if __name__ == "__main__":
config = {"configurable": {"thread_id": "сессия-1"}} config = {"configurable": {"thread_id": "сессия-1"}}
while True: while True:
user_input = input("Вы: ") user_input = input("\nВы: ")
if not user_input: if not user_input:
continue continue
# Initial invoke # First invoke
result = agent.invoke( result = agent.invoke(
{"messages": [{"role": "human", "content": user_input}]}, {"messages": [{"role": "human", "content": user_input}]},
config=config, config=config,
@@ -85,10 +81,9 @@ if __name__ == "__main__":
interrupt = result["__interrupt__"][0].value interrupt = result["__interrupt__"][0].value
decisions = handle_interrupt(interrupt) decisions = handle_interrupt(interrupt)
result = agent.invoke(Command(resume={"decisions": decisions}), config=config) result = agent.invoke(Command(resume={"decisions": decisions}), config=config)
# Final answer # Output final answer
if result.get("messages"): if result.get("messages"):
answer = result["messages"][-1].content print("\nАгент:", result["messages"][-1].content)
print(f"\nАгент: {answer}\n")
else: else:
print("\nАгент не ответил.\n") print("\nАгент не ответил.")
# Continue loop for next user query # Continue loop for next user query