forked from Archives/langchain
option for csv agent to not include df in prompt (#4610)
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7d425cbf38
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@ -2,7 +2,11 @@
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from typing import Any, Dict, List, Optional
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from langchain.agents.agent import AgentExecutor
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from langchain.agents.agent_toolkits.pandas.prompt import PREFIX, SUFFIX
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from langchain.agents.agent_toolkits.pandas.prompt import (
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PREFIX,
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SUFFIX_NO_DF,
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SUFFIX_WITH_DF,
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)
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from langchain.agents.mrkl.base import ZeroShotAgent
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from langchain.base_language import BaseLanguageModel
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from langchain.callbacks.base import BaseCallbackManager
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@ -15,7 +19,7 @@ def create_pandas_dataframe_agent(
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df: Any,
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callback_manager: Optional[BaseCallbackManager] = None,
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prefix: str = PREFIX,
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suffix: str = SUFFIX,
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suffix: Optional[str] = None,
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input_variables: Optional[List[str]] = None,
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verbose: bool = False,
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return_intermediate_steps: bool = False,
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@ -23,6 +27,7 @@ def create_pandas_dataframe_agent(
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max_execution_time: Optional[float] = None,
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early_stopping_method: str = "force",
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agent_executor_kwargs: Optional[Dict[str, Any]] = None,
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include_df_in_prompt: Optional[bool] = True,
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**kwargs: Dict[str, Any],
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) -> AgentExecutor:
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"""Construct a pandas agent from an LLM and dataframe."""
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@ -35,14 +40,27 @@ def create_pandas_dataframe_agent(
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if not isinstance(df, pd.DataFrame):
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raise ValueError(f"Expected pandas object, got {type(df)}")
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if include_df_in_prompt is not None and suffix is not None:
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raise ValueError("If suffix is specified, include_df_in_prompt should not be.")
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if suffix is not None:
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suffix_to_use = suffix
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if input_variables is None:
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input_variables = ["df", "input", "agent_scratchpad"]
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else:
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if include_df_in_prompt:
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suffix_to_use = SUFFIX_WITH_DF
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input_variables = ["df", "input", "agent_scratchpad"]
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else:
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suffix_to_use = SUFFIX_NO_DF
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input_variables = ["input", "agent_scratchpad"]
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tools = [PythonAstREPLTool(locals={"df": df})]
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prompt = ZeroShotAgent.create_prompt(
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tools, prefix=prefix, suffix=suffix, input_variables=input_variables
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tools, prefix=prefix, suffix=suffix_to_use, input_variables=input_variables
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)
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if "df" in input_variables:
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partial_prompt = prompt.partial(df=str(df.head().to_markdown()))
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else:
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partial_prompt = prompt
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llm_chain = LLMChain(
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llm=llm,
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prompt=partial_prompt,
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@ -4,7 +4,12 @@ PREFIX = """
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You are working with a pandas dataframe in Python. The name of the dataframe is `df`.
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You should use the tools below to answer the question posed of you:"""
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SUFFIX = """
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SUFFIX_NO_DF = """
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Begin!
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Question: {input}
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{agent_scratchpad}"""
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SUFFIX_WITH_DF = """
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This is the result of `print(df.head())`:
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{df}
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@ -102,7 +102,7 @@ class PythonAstREPLTool(BaseTool):
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output = mystdout.getvalue()
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except Exception as e:
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sys.stdout = old_stdout
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output = str(e)
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output = repr(e)
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return output
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except Exception as e:
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return "{}: {}".format(type(e).__name__, str(e))
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@ -21,5 +21,6 @@ class PythonREPL(BaseModel):
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output = mystdout.getvalue()
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except Exception as e:
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sys.stdout = old_stdout
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output = str(e)
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output = repr(e)
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print(output)
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return output
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@ -54,7 +54,7 @@ def test_python_repl_no_previous_variables() -> None:
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foo = 3 # noqa: F841
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repl = PythonREPL()
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output = repl.run("print(foo)")
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assert output == "name 'foo' is not defined"
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assert output == """NameError("name 'foo' is not defined")"""
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def test_python_repl_pass_in_locals() -> None:
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