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Superkingjcj
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Upload app.py
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app.py
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import os
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import asyncio
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import json
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import re
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import requests
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import streamlit as st
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from lagent.agents import Agent
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from lagent.prompts.parsers import PluginParser
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from lagent.agents.stream import PLUGIN_CN, get_plugin_prompt
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from lagent.schema import AgentMessage
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from lagent.actions import ArxivSearch
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from lagent.hooks import Hook
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from lagent.llms import GPTAPI
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YOUR_TOKEN_HERE = os.getenv("token")
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if not YOUR_TOKEN_HERE:
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raise EnvironmentError("未找到环境变量 'token',请设置后再运行程序。")
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# Hook类,用于对消息添加前缀
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class PrefixedMessageHook(Hook):
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def __init__(self, prefix, senders=None):
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"""
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初始化Hook
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:param prefix: 消息前缀
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:param senders: 指定发送者列表
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"""
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self.prefix = prefix
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self.senders = senders or []
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def before_agent(self, agent, messages, session_id):
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"""
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在代理处理消息前修改消息内容
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:param agent: 当前代理
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:param messages: 消息列表
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:param session_id: 会话ID
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"""
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for message in messages:
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if message.sender in self.senders:
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message.content = self.prefix + message.content
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class AsyncBlogger:
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"""博客生成类,整合写作者和批评者。"""
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def __init__(self, model_type, api_base, writer_prompt, critic_prompt, critic_prefix='', max_turn=2):
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"""
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初始化博客生成器
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:param model_type: 模型类型
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:param api_base: API 基地址
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:param writer_prompt: 写作者提示词
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:param critic_prompt: 批评者提示词
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:param critic_prefix: 批评消息前缀
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:param max_turn: 最大轮次
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"""
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self.model_type = model_type
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self.api_base = api_base
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self.llm = GPTAPI(
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model_type=model_type,
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api_base=api_base,
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key=YOUR_TOKEN_HERE,
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max_new_tokens=4096,
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)
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self.plugins = [dict(type='lagent.actions.ArxivSearch')]
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self.writer = Agent(
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self.llm,
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writer_prompt,
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name='写作者',
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output_format=dict(
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type=PluginParser,
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template=PLUGIN_CN,
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prompt=get_plugin_prompt(self.plugins)
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)
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)
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self.critic = Agent(
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self.llm,
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critic_prompt,
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name='批评者',
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hooks=[PrefixedMessageHook(critic_prefix, ['写作者'])]
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)
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self.max_turn = max_turn
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async def forward(self, message: AgentMessage, update_placeholder):
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"""
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执行多阶段博客生成流程
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:param message: 初始消息
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:param update_placeholder: Streamlit占位符
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:return: 最终优化的博客内容
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"""
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step1_placeholder = update_placeholder.container()
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step2_placeholder = update_placeholder.container()
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step3_placeholder = update_placeholder.container()
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# 第一步:生成初始内容
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step1_placeholder.markdown("**Step 1: 生成初始内容...**")
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message = self.writer(message)
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if message.content:
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step1_placeholder.markdown(f"**生成的初始内容**:\n\n{message.content}")
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else:
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step1_placeholder.markdown("**生成的初始内容为空,请检查生成逻辑。**")
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# 第二步:批评者提供反馈
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step2_placeholder.markdown("**Step 2: 批评者正在提供反馈和文献推荐...**")
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message = self.critic(message)
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if message.content:
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# 解析批评者反馈
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suggestions = re.search(r"1\. 批评建议:\n(.*?)2\. 推荐的关键词:", message.content, re.S)
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keywords = re.search(r"2\. 推荐的关键词:\n- (.*)", message.content)
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feedback = suggestions.group(1).strip() if suggestions else "未提供批评建议"
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keywords = keywords.group(1).strip() if keywords else "未提供关键词"
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# Arxiv 文献查询
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arxiv_search = ArxivSearch()
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arxiv_results = arxiv_search.get_arxiv_article_information(keywords)
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# 显示批评内容和文献推荐
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message.content = f"**批评建议**:\n{feedback}\n\n**推荐的文献**:\n{arxiv_results}"
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step2_placeholder.markdown(f"**批评和文献推荐**:\n\n{message.content}")
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else:
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step2_placeholder.markdown("**批评内容为空,请检查批评逻辑。**")
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# 第三步:写作者根据反馈优化内容
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step3_placeholder.markdown("**Step 3: 根据反馈改进内容...**")
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improvement_prompt = AgentMessage(
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sender="critic",
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content=(
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f"根据以下批评建议和推荐文献对内容进行改进:\n\n"
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f"批评建议:\n{feedback}\n\n"
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f"推荐文献:\n{arxiv_results}\n\n"
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f"请优化��始内容,使其更加清晰、丰富,并符合专业水准。"
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),
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)
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message = self.writer(improvement_prompt)
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if message.content:
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step3_placeholder.markdown(f"**最终优化的博客内容**:\n\n{message.content}")
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else:
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step3_placeholder.markdown("**最终优化的博客内容为空,请检查生成逻辑。**")
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return message
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def setup_sidebar():
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"""设置侧边栏,选择模型。"""
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model_name = st.sidebar.text_input('模型名称:', value='internlm2.5-latest')
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api_base = st.sidebar.text_input(
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'API Base 地址:', value='https://internlm-chat.intern-ai.org.cn/puyu/api/v1/chat/completions'
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)
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return model_name, api_base
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def main():
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"""
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主函数:构建Streamlit界面并处理用户交互
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"""
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st.set_page_config(layout='wide', page_title='Lagent Web Demo', page_icon='🤖')
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st.title("多代理博客优化助手")
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model_type, api_base = setup_sidebar()
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topic = st.text_input('输入一个话题:', 'Self-Supervised Learning')
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generate_button = st.button('生成博客内容')
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if (
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'blogger' not in st.session_state or
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st.session_state['model_type'] != model_type or
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st.session_state['api_base'] != api_base
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):
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st.session_state['blogger'] = AsyncBlogger(
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model_type=model_type,
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api_base=api_base,
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writer_prompt="你是一位优秀的AI内容写作者,请撰写一篇有吸引力且信息丰富的博客内容。",
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critic_prompt="""
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作为一位严谨的批评者,请给出建设性的批评和改进建议,并基于相关主题使用已有的工具推荐一些参考文献,推荐的关键词应该是英语形式,简洁且切题。
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请按照以下格式提供反馈:
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1. 批评建议:
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- (具体建议)
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2. 推荐的关键词:
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- (关键词1, 关键词2, ...)
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""",
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critic_prefix="请批评以下内容,并提供改进建议:\n\n"
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)
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st.session_state['model_type'] = model_type
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st.session_state['api_base'] = api_base
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if generate_button:
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update_placeholder = st.empty()
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async def run_async_blogger():
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message = AgentMessage(
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sender='user',
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content=f"请撰写一篇关于{topic}的博客文章,要求表达专业,生动有趣,并且易于理解。"
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)
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result = await st.session_state['blogger'].forward(message, update_placeholder)
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return result
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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loop.run_until_complete(run_async_blogger())
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if __name__ == '__main__':
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main()
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