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docs: add csv use case (#16756)
This commit is contained in:
Bagatur
GitHub
@@ -1,26 +1,55 @@
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from io import IOBase
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from typing import Any, List, Optional, Union
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from __future__ import annotations
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from langchain.agents.agent import AgentExecutor
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from langchain_core.language_models import BaseLanguageModel
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from io import IOBase
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from typing import TYPE_CHECKING, Any, List, Optional, Union
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from langchain_experimental.agents.agent_toolkits.pandas.base import (
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create_pandas_dataframe_agent,
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)
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if TYPE_CHECKING:
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from langchain.agents.agent import AgentExecutor
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from langchain_core.language_models import LanguageModelLike
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def create_csv_agent(
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llm: BaseLanguageModel,
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llm: LanguageModelLike,
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path: Union[str, IOBase, List[Union[str, IOBase]]],
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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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"""Create pandas dataframe agent by loading csv to a dataframe.
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Args:
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llm: Language model to use for the agent.
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path: A string path, file-like object or a list of string paths/file-like
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objects that can be read in as pandas DataFrames with pd.read_csv().
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pandas_kwargs: Named arguments to pass to pd.read_csv().
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**kwargs: Additional kwargs to pass to langchain_experimental.agents.agent_toolkits.pandas.base.create_pandas_dataframe_agent().
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Returns:
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An AgentExecutor with the specified agent_type agent and access to
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a PythonAstREPLTool with the loaded DataFrame(s) and any user-provided extra_tools.
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Example:
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.. code-block:: python
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from langchain_openai import ChatOpenAI
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from langchain_experimental.agents import create_csv_agent
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llm = ChatOpenAI(model="gpt-3.5-turbo", temperature=0)
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agent_executor = create_pandas_dataframe_agent(
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llm,
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"titanic.csv",
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agent_type="openai-tools",
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verbose=True
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)
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""" # noqa: E501
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try:
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import pandas as pd
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except ImportError:
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raise ImportError(
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"pandas package not found, please install with `pip install pandas`"
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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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@@ -1,16 +1,26 @@
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"""Agent for working with pandas objects."""
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from typing import Any, Dict, List, Optional, Sequence, Tuple
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import warnings
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from typing import Any, Dict, List, Literal, Optional, Sequence, Union
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from langchain.agents.agent import AgentExecutor, BaseSingleActionAgent
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from langchain.agents import AgentType, create_openai_tools_agent, create_react_agent
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from langchain.agents.agent import (
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AgentExecutor,
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BaseMultiActionAgent,
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BaseSingleActionAgent,
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RunnableAgent,
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RunnableMultiActionAgent,
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)
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from langchain.agents.mrkl.base import ZeroShotAgent
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from langchain.agents.openai_functions_agent.base import OpenAIFunctionsAgent
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from langchain.agents.types import AgentType
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from langchain.callbacks.base import BaseCallbackManager
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from langchain.chains.llm import LLMChain
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from langchain.schema import BasePromptTemplate
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from langchain.tools import BaseTool
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from langchain_core.language_models import BaseLanguageModel
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from langchain.agents.openai_functions_agent.base import (
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OpenAIFunctionsAgent,
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create_openai_functions_agent,
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)
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from langchain_core.callbacks import BaseCallbackManager
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from langchain_core.language_models import LanguageModelLike
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from langchain_core.messages import SystemMessage
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from langchain_core.prompts import BasePromptTemplate, ChatPromptTemplate
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from langchain_core.tools import BaseTool
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from langchain_core.utils.interactive_env import is_interactive_env
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from langchain_experimental.agents.agent_toolkits.pandas.prompt import (
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FUNCTIONS_WITH_DF,
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@@ -28,257 +38,121 @@ from langchain_experimental.tools.python.tool import PythonAstREPLTool
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def _get_multi_prompt(
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dfs: List[Any],
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*,
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prefix: Optional[str] = None,
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suffix: Optional[str] = None,
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input_variables: Optional[List[str]] = None,
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include_df_in_prompt: Optional[bool] = True,
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number_of_head_rows: int = 5,
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extra_tools: Sequence[BaseTool] = (),
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) -> Tuple[BasePromptTemplate, List[BaseTool]]:
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num_dfs = len(dfs)
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tools: Sequence[BaseTool] = (),
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) -> BasePromptTemplate:
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if suffix is not None:
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suffix_to_use = suffix
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include_dfs_head = True
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elif include_df_in_prompt:
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suffix_to_use = SUFFIX_WITH_MULTI_DF
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include_dfs_head = True
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else:
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suffix_to_use = SUFFIX_NO_DF
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include_dfs_head = False
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if input_variables is None:
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input_variables = ["input", "agent_scratchpad", "num_dfs"]
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if include_dfs_head:
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input_variables += ["dfs_head"]
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prefix = prefix if prefix is not None else MULTI_DF_PREFIX
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if prefix is None:
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prefix = MULTI_DF_PREFIX
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df_locals = {}
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for i, dataframe in enumerate(dfs):
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df_locals[f"df{i + 1}"] = dataframe
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tools = [PythonAstREPLTool(locals=df_locals)] + list(extra_tools)
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prompt = ZeroShotAgent.create_prompt(
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tools,
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prefix=prefix,
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suffix=suffix_to_use,
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input_variables=input_variables,
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)
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partial_prompt = prompt.partial()
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if "dfs_head" in input_variables:
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if "dfs_head" in partial_prompt.input_variables:
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dfs_head = "\n\n".join([d.head(number_of_head_rows).to_markdown() for d in dfs])
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partial_prompt = partial_prompt.partial(num_dfs=str(num_dfs), dfs_head=dfs_head)
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if "num_dfs" in input_variables:
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partial_prompt = partial_prompt.partial(num_dfs=str(num_dfs))
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return partial_prompt, tools
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partial_prompt = partial_prompt.partial(dfs_head=dfs_head)
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if "num_dfs" in partial_prompt.input_variables:
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partial_prompt = partial_prompt.partial(num_dfs=str(len(dfs)))
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return partial_prompt
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def _get_single_prompt(
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df: Any,
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*,
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prefix: Optional[str] = None,
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suffix: Optional[str] = None,
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input_variables: Optional[List[str]] = None,
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include_df_in_prompt: Optional[bool] = True,
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number_of_head_rows: int = 5,
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extra_tools: Sequence[BaseTool] = (),
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) -> Tuple[BasePromptTemplate, List[BaseTool]]:
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tools: Sequence[BaseTool] = (),
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) -> BasePromptTemplate:
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if suffix is not None:
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suffix_to_use = suffix
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include_df_head = True
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elif include_df_in_prompt:
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suffix_to_use = SUFFIX_WITH_DF
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include_df_head = True
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else:
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suffix_to_use = SUFFIX_NO_DF
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include_df_head = False
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if input_variables is None:
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input_variables = ["input", "agent_scratchpad"]
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if include_df_head:
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input_variables += ["df_head"]
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if prefix is None:
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prefix = PREFIX
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tools = [PythonAstREPLTool(locals={"df": df})] + list(extra_tools)
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prefix = prefix if prefix is not None else PREFIX
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prompt = ZeroShotAgent.create_prompt(
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tools,
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prefix=prefix,
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suffix=suffix_to_use,
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input_variables=input_variables,
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)
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partial_prompt = prompt.partial()
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if "df_head" in input_variables:
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partial_prompt = partial_prompt.partial(
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df_head=str(df.head(number_of_head_rows).to_markdown())
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)
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return partial_prompt, tools
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if "df_head" in partial_prompt.input_variables:
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df_head = str(df.head(number_of_head_rows).to_markdown())
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partial_prompt = partial_prompt.partial(df_head=df_head)
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return partial_prompt
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def _get_prompt_and_tools(
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df: Any,
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prefix: Optional[str] = None,
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suffix: Optional[str] = None,
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input_variables: Optional[List[str]] = None,
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include_df_in_prompt: Optional[bool] = True,
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number_of_head_rows: int = 5,
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extra_tools: Sequence[BaseTool] = (),
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) -> Tuple[BasePromptTemplate, List[BaseTool]]:
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try:
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import pandas as pd
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pd.set_option("display.max_columns", None)
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except ImportError:
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raise ImportError(
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"pandas package not found, please install with `pip install pandas`"
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)
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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 isinstance(df, list):
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for item in df:
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if not isinstance(item, pd.DataFrame):
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raise ValueError(f"Expected pandas object, got {type(df)}")
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return _get_multi_prompt(
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df,
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prefix=prefix,
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suffix=suffix,
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input_variables=input_variables,
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include_df_in_prompt=include_df_in_prompt,
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number_of_head_rows=number_of_head_rows,
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extra_tools=extra_tools,
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)
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else:
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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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return _get_single_prompt(
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df,
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prefix=prefix,
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suffix=suffix,
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input_variables=input_variables,
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include_df_in_prompt=include_df_in_prompt,
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number_of_head_rows=number_of_head_rows,
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extra_tools=extra_tools,
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)
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def _get_prompt(df: Any, **kwargs: Any) -> BasePromptTemplate:
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return (
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_get_multi_prompt(df, **kwargs)
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if isinstance(df, list)
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else _get_single_prompt(df, **kwargs)
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)
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def _get_functions_single_prompt(
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df: Any,
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*,
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prefix: Optional[str] = None,
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suffix: Optional[str] = None,
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suffix: str = "",
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include_df_in_prompt: Optional[bool] = True,
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number_of_head_rows: int = 5,
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) -> Tuple[BasePromptTemplate, List[PythonAstREPLTool]]:
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if suffix is not None:
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suffix_to_use = suffix
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if include_df_in_prompt:
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suffix_to_use = suffix_to_use.format(
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df_head=str(df.head(number_of_head_rows).to_markdown())
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)
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elif include_df_in_prompt:
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suffix_to_use = FUNCTIONS_WITH_DF.format(
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df_head=str(df.head(number_of_head_rows).to_markdown())
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)
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else:
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suffix_to_use = ""
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if prefix is None:
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prefix = PREFIX_FUNCTIONS
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tools = [PythonAstREPLTool(locals={"df": df})]
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system_message = SystemMessage(content=prefix + suffix_to_use)
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) -> ChatPromptTemplate:
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if include_df_in_prompt:
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df_head = str(df.head(number_of_head_rows).to_markdown())
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suffix = (suffix or FUNCTIONS_WITH_DF).format(df_head=df_head)
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prefix = prefix if prefix is not None else PREFIX_FUNCTIONS
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system_message = SystemMessage(content=prefix + suffix)
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prompt = OpenAIFunctionsAgent.create_prompt(system_message=system_message)
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return prompt, tools
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return prompt
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def _get_functions_multi_prompt(
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dfs: Any,
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prefix: Optional[str] = None,
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suffix: Optional[str] = None,
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*,
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prefix: str = "",
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suffix: str = "",
|
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include_df_in_prompt: Optional[bool] = True,
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number_of_head_rows: int = 5,
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) -> Tuple[BasePromptTemplate, List[PythonAstREPLTool]]:
|
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if suffix is not None:
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suffix_to_use = suffix
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if include_df_in_prompt:
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dfs_head = "\n\n".join(
|
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[d.head(number_of_head_rows).to_markdown() for d in dfs]
|
||||
)
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suffix_to_use = suffix_to_use.format(
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dfs_head=dfs_head,
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)
|
||||
elif include_df_in_prompt:
|
||||
) -> ChatPromptTemplate:
|
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if include_df_in_prompt:
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dfs_head = "\n\n".join([d.head(number_of_head_rows).to_markdown() for d in dfs])
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suffix_to_use = FUNCTIONS_WITH_MULTI_DF.format(
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dfs_head=dfs_head,
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||||
)
|
||||
else:
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suffix_to_use = ""
|
||||
|
||||
if prefix is None:
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prefix = MULTI_DF_PREFIX_FUNCTIONS
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prefix = prefix.format(num_dfs=str(len(dfs)))
|
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|
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df_locals = {}
|
||||
for i, dataframe in enumerate(dfs):
|
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df_locals[f"df{i + 1}"] = dataframe
|
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tools = [PythonAstREPLTool(locals=df_locals)]
|
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system_message = SystemMessage(content=prefix + suffix_to_use)
|
||||
suffix = (suffix or FUNCTIONS_WITH_MULTI_DF).format(dfs_head=dfs_head)
|
||||
prefix = (prefix or MULTI_DF_PREFIX_FUNCTIONS).format(num_dfs=str(len(dfs)))
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||||
system_message = SystemMessage(content=prefix + suffix)
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prompt = OpenAIFunctionsAgent.create_prompt(system_message=system_message)
|
||||
return prompt, tools
|
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return prompt
|
||||
|
||||
|
||||
def _get_functions_prompt_and_tools(
|
||||
df: Any,
|
||||
prefix: Optional[str] = None,
|
||||
suffix: Optional[str] = None,
|
||||
input_variables: Optional[List[str]] = None,
|
||||
include_df_in_prompt: Optional[bool] = True,
|
||||
number_of_head_rows: int = 5,
|
||||
) -> Tuple[BasePromptTemplate, List[PythonAstREPLTool]]:
|
||||
try:
|
||||
import pandas as pd
|
||||
|
||||
pd.set_option("display.max_columns", None)
|
||||
except ImportError:
|
||||
raise ImportError(
|
||||
"pandas package not found, please install with `pip install pandas`"
|
||||
)
|
||||
if input_variables is not None:
|
||||
raise ValueError("`input_variables` is not supported at the moment.")
|
||||
|
||||
if include_df_in_prompt is not None and suffix is not None:
|
||||
raise ValueError("If suffix is specified, include_df_in_prompt should not be.")
|
||||
|
||||
if isinstance(df, list):
|
||||
for item in df:
|
||||
if not isinstance(item, pd.DataFrame):
|
||||
raise ValueError(f"Expected pandas object, got {type(df)}")
|
||||
return _get_functions_multi_prompt(
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
)
|
||||
else:
|
||||
if not isinstance(df, pd.DataFrame):
|
||||
raise ValueError(f"Expected pandas object, got {type(df)}")
|
||||
return _get_functions_single_prompt(
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
)
|
||||
def _get_functions_prompt(df: Any, **kwargs: Any) -> ChatPromptTemplate:
|
||||
return (
|
||||
_get_functions_multi_prompt(df, **kwargs)
|
||||
if isinstance(df, list)
|
||||
else _get_functions_single_prompt(df, **kwargs)
|
||||
)
|
||||
|
||||
|
||||
def create_pandas_dataframe_agent(
|
||||
llm: BaseLanguageModel,
|
||||
llm: LanguageModelLike,
|
||||
df: Any,
|
||||
agent_type: AgentType = AgentType.ZERO_SHOT_REACT_DESCRIPTION,
|
||||
agent_type: Union[
|
||||
AgentType, Literal["openai-tools"]
|
||||
] = AgentType.ZERO_SHOT_REACT_DESCRIPTION,
|
||||
callback_manager: Optional[BaseCallbackManager] = None,
|
||||
prefix: Optional[str] = None,
|
||||
suffix: Optional[str] = None,
|
||||
@@ -292,54 +166,131 @@ def create_pandas_dataframe_agent(
|
||||
include_df_in_prompt: Optional[bool] = True,
|
||||
number_of_head_rows: int = 5,
|
||||
extra_tools: Sequence[BaseTool] = (),
|
||||
**kwargs: Dict[str, Any],
|
||||
**kwargs: Any,
|
||||
) -> AgentExecutor:
|
||||
"""Construct a pandas agent from an LLM and dataframe."""
|
||||
agent: BaseSingleActionAgent
|
||||
base_tools: Sequence[BaseTool]
|
||||
if agent_type == AgentType.ZERO_SHOT_REACT_DESCRIPTION:
|
||||
prompt, base_tools = _get_prompt_and_tools(
|
||||
"""Construct a Pandas agent from an LLM and dataframe(s).
|
||||
|
||||
Args:
|
||||
llm: Language model to use for the agent.
|
||||
df: Pandas dataframe or list of Pandas dataframes.
|
||||
agent_type: One of "openai-tools", "openai-functions", or
|
||||
"zero-shot-react-description". Defaults to "zero-shot-react-description".
|
||||
"openai-tools" is recommended over "openai-functions".
|
||||
callback_manager: DEPRECATED. Pass "callbacks" key into 'agent_executor_kwargs'
|
||||
instead to pass constructor callbacks to AgentExecutor.
|
||||
prefix: Prompt prefix string.
|
||||
suffix: Prompt suffix string.
|
||||
input_variables: DEPRECATED. Input variables automatically inferred from
|
||||
constructed prompt.
|
||||
verbose: AgentExecutor verbosity.
|
||||
return_intermediate_steps: Passed to AgentExecutor init.
|
||||
max_iterations: Passed to AgentExecutor init.
|
||||
max_execution_time: Passed to AgentExecutor init.
|
||||
early_stopping_method: Passed to AgentExecutor init.
|
||||
agent_executor_kwargs: Arbitrary additional AgentExecutor args.
|
||||
include_df_in_prompt: Whether to include the first number_of_head_rows in the
|
||||
prompt. Must be None if suffix is not None.
|
||||
number_of_head_rows: Number of initial rows to include in prompt if
|
||||
include_df_in_prompt is True.
|
||||
extra_tools: Additional tools to give to agent on top of a PythonAstREPLTool.
|
||||
**kwargs: DEPRECATED. Not used, kept for backwards compatibility.
|
||||
|
||||
Returns:
|
||||
An AgentExecutor with the specified agent_type agent and access to
|
||||
a PythonAstREPLTool with the DataFrame(s) and any user-provided extra_tools.
|
||||
|
||||
Example:
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
from langchain_openai import ChatOpenAI
|
||||
from langchain_experimental.agents import create_pandas_dataframe_agent
|
||||
import pandas as pd
|
||||
|
||||
df = pd.read_csv("titanic.csv")
|
||||
llm = ChatOpenAI(model="gpt-3.5-turbo", temperature=0)
|
||||
agent_executor = create_pandas_dataframe_agent(
|
||||
llm,
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
input_variables=input_variables,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
extra_tools=extra_tools,
|
||||
agent_type="openai-tools",
|
||||
verbose=True
|
||||
)
|
||||
tools = base_tools
|
||||
llm_chain = LLMChain(
|
||||
llm=llm,
|
||||
prompt=prompt,
|
||||
callback_manager=callback_manager,
|
||||
)
|
||||
tool_names = [tool.name for tool in tools]
|
||||
agent = ZeroShotAgent(
|
||||
llm_chain=llm_chain,
|
||||
allowed_tools=tool_names,
|
||||
callback_manager=callback_manager,
|
||||
**kwargs,
|
||||
)
|
||||
elif agent_type == AgentType.OPENAI_FUNCTIONS:
|
||||
_prompt, base_tools = _get_functions_prompt_and_tools(
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
input_variables=input_variables,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
)
|
||||
tools = list(base_tools) + list(extra_tools)
|
||||
agent = OpenAIFunctionsAgent(
|
||||
llm=llm,
|
||||
prompt=_prompt,
|
||||
tools=tools,
|
||||
callback_manager=callback_manager,
|
||||
**kwargs,
|
||||
|
||||
""" # noqa: E501
|
||||
try:
|
||||
import pandas as pd
|
||||
except ImportError as e:
|
||||
raise ImportError(
|
||||
"pandas package not found, please install with `pip install pandas`"
|
||||
) from e
|
||||
|
||||
if is_interactive_env():
|
||||
pd.set_option("display.max_columns", None)
|
||||
|
||||
for _df in df if isinstance(df, list) else [df]:
|
||||
if not isinstance(_df, pd.DataFrame):
|
||||
raise ValueError(f"Expected pandas DataFrame, got {type(_df)}")
|
||||
|
||||
if input_variables:
|
||||
kwargs = kwargs or {}
|
||||
kwargs["input_variables"] = input_variables
|
||||
if kwargs:
|
||||
warnings.warn(
|
||||
f"Received additional kwargs {kwargs} which are no longer supported."
|
||||
)
|
||||
|
||||
df_locals = {}
|
||||
if isinstance(df, list):
|
||||
for i, dataframe in enumerate(df):
|
||||
df_locals[f"df{i + 1}"] = dataframe
|
||||
else:
|
||||
raise ValueError(f"Agent type {agent_type} not supported at the moment.")
|
||||
return AgentExecutor.from_agent_and_tools(
|
||||
df_locals["df"] = df
|
||||
tools = [PythonAstREPLTool(locals=df_locals)] + list(extra_tools)
|
||||
|
||||
if agent_type == AgentType.ZERO_SHOT_REACT_DESCRIPTION:
|
||||
if include_df_in_prompt is not None and suffix is not None:
|
||||
raise ValueError(
|
||||
"If suffix is specified, include_df_in_prompt should not be."
|
||||
)
|
||||
prompt = _get_prompt(
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
tools=tools,
|
||||
)
|
||||
agent: Union[BaseSingleActionAgent, BaseMultiActionAgent] = RunnableAgent(
|
||||
runnable=create_react_agent(llm, tools, prompt), # type: ignore
|
||||
input_keys_arg=["input"],
|
||||
return_keys_arg=["output"],
|
||||
)
|
||||
elif agent_type in (AgentType.OPENAI_FUNCTIONS, "openai-tools"):
|
||||
prompt = _get_functions_prompt(
|
||||
df,
|
||||
prefix=prefix,
|
||||
suffix=suffix,
|
||||
include_df_in_prompt=include_df_in_prompt,
|
||||
number_of_head_rows=number_of_head_rows,
|
||||
)
|
||||
if agent_type == AgentType.OPENAI_FUNCTIONS:
|
||||
agent = RunnableAgent(
|
||||
runnable=create_openai_functions_agent(llm, tools, prompt), # type: ignore
|
||||
input_keys_arg=["input"],
|
||||
return_keys_arg=["output"],
|
||||
)
|
||||
else:
|
||||
agent = RunnableMultiActionAgent(
|
||||
runnable=create_openai_tools_agent(llm, tools, prompt), # type: ignore
|
||||
input_keys_arg=["input"],
|
||||
return_keys_arg=["output"],
|
||||
)
|
||||
else:
|
||||
raise ValueError(
|
||||
f"Agent type {agent_type} not supported at the moment. Must be one of "
|
||||
"'openai-tools', 'openai-functions', or 'zero-shot-react-description'."
|
||||
)
|
||||
return AgentExecutor(
|
||||
agent=agent,
|
||||
tools=tools,
|
||||
callback_manager=callback_manager,
|
||||
|
||||
Reference in New Issue
Block a user