langchain
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langchain-ai
AttributeError: 'str' object has no attribute 'tool'
Checked other resources
- [X] I added a very descriptive title to this issue.
- [X] I searched the LangChain documentation with the integrated search.
- [X] I used the GitHub search to find a similar question and didn't find it.
- [X] I am sure that this is a bug in LangChain rather than my code.
- [X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
Example Code
self.prompt = config.get_prompt("system_monitor_template_test3")
self.system = self.prompt
graph = StateGraph(AgentState)
graph.add_node("llm", self.call_agents)
graph.add_node("action", self.take_action)
graph.add_conditional_edges(
"llm",
self.exists_action,
{True: "action", False: END}
)
self.llm = self.interface.get_current_model(0.2,0.2,10)
self.create_tools()
graph.add_edge("action", "llm")
graph.set_entry_point("llm")
self.memory = MemorySaver()
self.graph = graph.compile(checkpointer=self.memory)
def create_agent_node(self):
prompt_template = PromptTemplate(template=self.system)
system_message = prompt_template.format()
if self.agent_node is None:
self.agent_node = create_react_agent(
self.llm,
self.tools,
state_modifier=system_message,
)
self.agent_executor = AgentExecutor(
agent=self.agent_node,
tools=self.tools,
verbose=True
)
..............
async def print_response(self, initial_message: str):
messages = [("user", initial_message)]
thread = {"configurable": {"thread_id": self.user_id}}
async for event in self.graph.astream_events({"messages": messages}, thread, version="v2"):
kind = event["event"]
if kind == "on_chat_model_stream":
content = event["data"]["chunk"].content
if content:
print(content, end="", flush=True)
Example usage:
if name == "main": agent = Agent("12345")
input = "check CPU "
asyncio.run(agent.print_response(input))
Error Message and Stack Trace (if applicable)
Entering new AgentExecutor chain... [2024-12-27 15:24:47,480]-INFO-[functionCall.py:28]: executing shell command: top -b -n 1 | grep "Cpu(s)" result output:%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
The current CPU usage is 0.0% for user, 0.0% for system, 0.0% for nice, 100.0% for idle, 0.0% for wait, 0.0% for hardware interrupt, 0.0% for software interrupt, and 0.0% for steal.[2024-12-27 15:24:48,379]-WARNING-[manager.py:287]: Error in StdOutCallbackHandler.on_agent_action callback: AttributeError("'str' object has no attribute 'log'")
Traceback (most recent call last):
File "/mnt/m/flyang/pr_train/LLMs/src/langgraphsearch/agentWorkflow.py", line 190, in
Description
AgentExecutor AttributeError: 'str' object has no attribute 'tool'
System Info
System Information
OS: Linux OS Version: #1 SMP Tue Nov 5 00:21:55 UTC 2024 Python Version: 3.12.7 | packaged by Anaconda, Inc. | (main, Oct 4 2024, 13:27:36) [GCC 11.2.0]
Package Information
langchain_core: 0.3.28 langchain: 0.3.12 langchain_community: 0.3.9 langsmith: 0.1.143 langchain_anthropic: 0.3.0 langchain_ark: 0.1.4 langchain_cli: 0.0.35 langchain_experimental: 0.3.3 langchain_google_community: 2.0.2 langchain_google_genai: 2.0.7 langchain_groq: 0.2.1 langchain_huggingface: 0.1.2 langchain_milvus: 0.1.7 langchain_openai: 0.2.11 langchain_text_splitters: 0.3.3 langchain_together: 0.2.0 langchain_xai: 0.1.1 langgraph_sdk: 0.1.36 langserve: 0.3.0
Other Dependencies
aiohttp: 3.11.2 anthropic: 0.40.0 async-timeout: Installed. No version info available. beautifulsoup4: 4.12.3 dataclasses-json: 0.6.7 db-dtypes: Installed. No version info available. defusedxml: 0.7.1 fastapi: 0.115.5 filetype: 1.2.0 gapic-google-longrunning: Installed. No version info available. gitpython: 3.1.43 google-api-core: 2.23.0 google-api-python-client: 2.153.0 google-auth-httplib2: 0.2.0 google-auth-oauthlib: Installed. No version info available. google-cloud-aiplatform: Installed. No version info available. google-cloud-bigquery: Installed. No version info available. google-cloud-bigquery-storage: Installed. No version info available. google-cloud-contentwarehouse: Installed. No version info available. google-cloud-core: 2.4.1 google-cloud-discoveryengine: Installed. No version info available. google-cloud-documentai: Installed. No version info available. google-cloud-documentai-toolbox: Installed. No version info available. google-cloud-speech: Installed. No version info available. google-cloud-storage: Installed. No version info available. google-cloud-texttospeech: Installed. No version info available. google-cloud-translate: Installed. No version info available. google-cloud-vision: Installed. No version info available. google-generativeai: 0.8.3 googlemaps: Installed. No version info available. gritql: 0.1.5 groq: 0.13.0 grpcio: 1.67.1 httpx: 0.27.2 httpx-sse: 0.4.0 huggingface-hub: 0.26.2 jsonpatch: 1.33 langserve[all]: Installed. No version info available. numpy: 2.2.0 openai: 1.54.4 orjson: 3.10.11 packaging: 24.2 pandas: 2.2.3 pyarrow: 18.1.0 pydantic: 2.9.2 pydantic-settings: 2.6.1 pymilvus: 2.5.0 PyYAML: 6.0.2 requests: 2.32.3 requests-toolbelt: 1.0.0 sentence-transformers: 3.3.0 SQLAlchemy: 2.0.35 sse-starlette: 1.8.2 tenacity: 9.0.0 tiktoken: 0.8.0 tokenizers: 0.20.3 tomlkit: 0.12.0 transformers: 4.46.2 typer[all]: Installed. No version info available. typing-extensions: 4.12.2 uvicorn: 0.32.0 volcengine-python-sdk[ark]: Installed. No version info available.
