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SpringFestQAt
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from langchain.llms.base import LLM
from typing import Any, List, Optional
from langchain.callbacks.manager import CallbackManagerForLLMRun
from transformers import AutoTokenizer, AutoModelForCausalLM
import torch
class InternLM_LLM(LLM):
# 基于本地 InternLM 自定义 LLM 类
tokenizer : AutoTokenizer = None
model: AutoModelForCausalLM = None
def __init__(self, model_path :str):
# model_path: InternLM 模型路径
# 从本地初始化模型
super().__init__()
print("正在从本地加载模型...")
self.tokenizer = AutoTokenizer.from_pretrained(model_path, trust_remote_code=True)
self.model = AutoModelForCausalLM.from_pretrained(model_path, trust_remote_code=True).to(torch.bfloat16).cuda()
self.model = self.model.eval()
print("完成本地模型的加载")
def _call(self, prompt : str, stop: Optional[List[str]] = None,
run_manager: Optional[CallbackManagerForLLMRun] = None,
**kwargs: Any):
# 重写调用函数
system_prompt = """你是一个在外地工作的单身年轻人,收入低下,现在在亲戚家拜年。中国春节是全家团圆的节日,亲戚朋友都会聚在一起询问一年的新进展。由于亲戚总是会问一些刁难人的奇葩问题,关于学习、婚姻、恋爱等等,喜欢将他们的观点强行输出给年轻人,你需要根据之后的指令来回答亲戚的问题。
"""
messages = [(system_prompt, '')]
response, history = self.model.chat(self.tokenizer, prompt , history=messages)
return response
@property
def _llm_type(self) -> str:
return "InternLM"
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