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27 lines
904 B
Python
27 lines
904 B
Python
from typing import Union
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from langchain.agents.agent import AgentOutputParser
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from langchain.schema import AgentAction, AgentFinish, OutputParserException
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class SelfAskOutputParser(AgentOutputParser):
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def parse(self, text: str) -> Union[AgentAction, AgentFinish]:
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followup = "Follow up:"
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last_line = text.split("\n")[-1]
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if followup not in last_line:
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finish_string = "So the final answer is: "
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if finish_string not in last_line:
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raise OutputParserException(f"Could not parse output: {text}")
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return AgentFinish({"output": last_line[len(finish_string) :]}, text)
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after_colon = text.split(":")[-1]
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if " " == after_colon[0]:
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after_colon = after_colon[1:]
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return AgentAction("Intermediate Answer", after_colon, text)
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@property
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def _type(self) -> str:
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return "self_ask"
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