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langgraph/libs/langgraph/tests/agents.py
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Sydney RunkleandGitHub 2d3121a17c chore: drop Python 3.9 (and syntax) (#6289)
* `strict=False` is the default, pyupgrade to min version 3.10 adds this
to be explicit w/ behavior
2025-10-16 20:17:46 -04:00

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Python

from typing import Literal
from pydantic import BaseModel
# define these objects to avoid importing langchain_core.agents
# and therefore avoid relying on core Pydantic version
class AgentAction(BaseModel):
"""
Represents a request to execute an action by an agent.
The action consists of the name of the tool to execute and the input to pass
to the tool. The log is used to pass along extra information about the action.
"""
tool: str
tool_input: str | dict
log: str
type: Literal["AgentAction"] = "AgentAction"
class AgentFinish(BaseModel):
"""Final return value of an ActionAgent.
Agents return an AgentFinish when they have reached a stopping condition.
"""
return_values: dict
log: str
type: Literal["AgentFinish"] = "AgentFinish"