from langchain.tools import Tool from langchain_community.tools import DuckDuckGoSearchRun from langgraph.store.memory import InMemoryStore import random from huggingface_hub import list_models # Initialize the DuckDuckGo search tool search_tool = DuckDuckGoSearchRun() # Initialize the memory store store = InMemoryStore(index={"embed": "openai:text-embedding-3-small"}) # Define the weather information tool def get_weather_info(location: str) -> str: """Fetches dummy weather information for a given location.""" weather_conditions = [ {"condition": "Rainy", "temp_c": 15}, {"condition": "Clear", "temp_c": 25}, {"condition": "Windy", "temp_c": 20} ] data = random.choice(weather_conditions) return f"Weather in {location}: {data['condition']}, {data['temp_c']}°C" weather_info_tool = Tool( name="get_weather_info", func=get_weather_info, description="Fetches dummy weather information for a given location." ) # Define the Hub stats tool def get_hub_stats(author: str) -> str: """Fetches the most downloaded model from a specific author on the Hugging Face Hub.""" try: models = list(list_models(author=author, sort="downloads", direction=-1, limit=1)) if models: model = models[0] return f"The most downloaded model by {author} is {model.id} with {model.downloads:,} downloads." else: return f"No models found for author {author}." except Exception as e: return f"Error fetching models for {author}: {str(e)}" hub_stats_tool = Tool( name="get_hub_stats", func=get_hub_stats, description="Fetches the most downloaded model from a specific author on the Hugging Face Hub." ) # Define the memory management tool def memory_management(query: str) -> str: """Manages and queries conversation memory.""" results = store.retrieve(query) if results: return "\n\n".join(results) else: return "No relevant memory found." memory_management_tool = Tool( name="memory_management", func=memory_management, description="Manages and queries conversation memory." ) def duckduckgo_search(query: str) -> str: """Searches the web for information.""" return search_tool.run(query) duckduckgo_search_tool = Tool( name="duckduckgo_search", func=duckduckgo_search, description="Searches the web for information." ) # manage_memory_tool = create_manage_memory_tool(namespace=("memories",)) # search_memory_tool = create_search_memory_tool(namespace=("memories",))