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35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
"""Agent for working with csvs."""
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from typing import Any, List, Optional, Union
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from langchain.agents.agent import AgentExecutor
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from langchain.agents.agent_toolkits.pandas.base import create_pandas_dataframe_agent
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from langchain.base_language import BaseLanguageModel
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def create_csv_agent(
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llm: BaseLanguageModel,
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path: Union[str, List[str]],
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pandas_kwargs: Optional[dict] = None,
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**kwargs: Any,
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) -> AgentExecutor:
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"""Create csv agent by loading to a dataframe and using pandas agent."""
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try:
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import pandas as pd
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except ImportError:
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raise ValueError(
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"pandas package not found, please install with `pip install pandas`"
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)
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_kwargs = pandas_kwargs or {}
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if isinstance(path, str):
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df = pd.read_csv(path, **_kwargs)
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elif isinstance(path, list):
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df = []
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for item in path:
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if not isinstance(item, str):
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raise ValueError(f"Expected str, got {type(path)}")
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df.append(pd.read_csv(item, **_kwargs))
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else:
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raise ValueError(f"Expected str or list, got {type(path)}")
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return create_pandas_dataframe_agent(llm, df, **kwargs)
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