mirror of https://github.com/hwchase17/langchain
mv base cache to schema (#9953)
if you remove all other imports from langchain.init it exposes a circular deppull/9997/head
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9870bfb9cd
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from __future__ import annotations
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from abc import ABC, abstractmethod
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from typing import Any, Optional, Sequence
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from langchain.schema.output import Generation
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RETURN_VAL_TYPE = Sequence[Generation]
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class BaseCache(ABC):
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"""Base interface for cache."""
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@abstractmethod
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def lookup(self, prompt: str, llm_string: str) -> Optional[RETURN_VAL_TYPE]:
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"""Look up based on prompt and llm_string."""
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@abstractmethod
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def update(self, prompt: str, llm_string: str, return_val: RETURN_VAL_TYPE) -> None:
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"""Update cache based on prompt and llm_string."""
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@abstractmethod
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def clear(self, **kwargs: Any) -> None:
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"""Clear cache that can take additional keyword arguments."""
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