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PrefectHQ / ControlFlow

🦾 Take control of your AI agents
https://controlflow.ai
Apache License 2.0
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LangChain tool errors when running with controlflow built from main (works fine with 0.8.2) #228

Closed discdiver closed 2 months ago

discdiver commented 2 months ago

Description

Ran script in #222 in a fresh environment. Errors with AttributeError: 'DuckDuckGoSearchRun' object has no attribute 'to_lc_tool'

Example Code

Version below changes how agents are passed to avoid deprecation warning (ran it both ways).

# uv pip install langchain-community, duckduckgo-search

import controlflow as cf
from langchain_community.tools import DuckDuckGoSearchRun

summarizer = cf.Agent(
    name="Headline Summarizer",
    description="An AI agent that fetches and summarizes current events",
    tools=[DuckDuckGoSearchRun()],
)

extractor = cf.Agent(
    name="Entity Extractor",
    description="An AI agent that does named entity recognition",
)

@cf.flow
def get_headlines():

    summarizer_task = cf.Task(
        "Retrieve and summarize today's two top business headlines",
        agent=summarizer,
        result_type=list[str],
    )

    extractor_task = cf.Task(
        "Extract any fortune 500 companies mentioned in the headlines and whether the sentiment is positive, neutral, or negative",
        agent=extractor,
        depends_on=[summarizer_task],
    )

    return summarizer_task, extractor_task

if __name__ == "__main__":
    headlines, entity_sentiment = get_headlines()
    print(headlines, entity_sentiment)

Version Information

Same package versions in working and non-working cases other than controlflow:
controflow         0.8.3.dev54+gc90dfbb  

duckduckgo-search         6.1.12 
langchain                 0.2.7                    pypi_0    pypi
langchain-anthropic       0.1.19                   pypi_0    pypi
langchain-community       0.2.7                    pypi_0    pypi
langchain-core            0.2.16                   pypi_0    pypi
langchain-openai          0.1.15                   pypi_0    pypi
langchain-text-splitters  0.2.2                    pypi_0    pypi

Additional Context


09:49:07.241 | ERROR   | Flow run 'cerulean-coyote' - Encountered exception during execution: AttributeError("'DuckDuckGoSearchRun' object has no attribute 'to_lc_tool'")
Traceback (most recent call last):
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 635, in run_context
    yield self
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 676, in run_flow_sync
    engine.call_flow_fn()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 655, in call_flow_fn
    result = call_with_parameters(self.flow.fn, self.parameters)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/utilities/callables.py", line 208, in call_with_parameters
    return fn(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/decorators.py", line 120, in wrapper
    flow_obj.run()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/flows/flow.py", line 134, in run
    orchestrator.run(steps=steps)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/orchestration/orchestrator.py", line 114, in run
    agent._run(context=context)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 202, in _run
    for event in self._run_model(messages=messages, tools=context.tools):
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 227, in _run_model
    model = self.get_model(tools=tools)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 159, in get_model
    model = model.bind_tools([t.to_lc_tool() for t in tools])
                              ^^^^^^^^^^^^
AttributeError: 'DuckDuckGoSearchRun' object has no attribute 'to_lc_tool'
09:49:07.370 | ERROR   | Flow run 'cerulean-coyote' - Finished in state Failed("Flow run encountered an exception: AttributeError: 'DuckDuckGoSearchRun' object has no attribute 'to_lc_tool'")
Traceback (most recent call last):
  File "/Users/jeffhale/Desktop/prefect/demos/cf/cf_example.py", line 38, in <module>
    headlines, entity_sentiment = get_headlines()
                                  ^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flows.py", line 1326, in __call__
    return run_flow(
           ^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 798, in run_flow
    return run_flow_sync(**kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 678, in run_flow_sync
    return engine.state if return_type == "state" else engine.result()
                                                       ^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 243, in result
    raise self._raised
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 635, in run_context
    yield self
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 676, in run_flow_sync
    engine.call_flow_fn()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/flow_engine.py", line 655, in call_flow_fn
    result = call_with_parameters(self.flow.fn, self.parameters)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/prefect/utilities/callables.py", line 208, in call_with_parameters
    return fn(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/decorators.py", line 120, in wrapper
    flow_obj.run()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/flows/flow.py", line 134, in run
    orchestrator.run(steps=steps)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/orchestration/orchestrator.py", line 114, in run
    agent._run(context=context)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 202, in _run
    for event in self._run_model(messages=messages, tools=context.tools):
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 227, in _run_model
    model = self.get_model(tools=tools)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Caskroom/miniforge/base/envs/cfmain/lib/python3.12/site-packages/controlflow/agents/agent.py", line 159, in get_model
    model = model.bind_tools([t.to_lc_tool() for t in tools])
                              ^^^^^^^^^^^^
AttributeError: 'DuckDuckGoSearchRun' object has no attribute 'to_lc_tool'
jlowin commented 2 months ago

Thank you! Replicated, looking.