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"""正文提取模块的数据模型。
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核心:Article 是 M2 与下游(去重 / LLM / Embedding)的唯一交换格式。
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"""
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from __future__ import annotations
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from datetime import datetime
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from pydantic import BaseModel, Field
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class Article(BaseModel):
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"""提取后的标准化文章。
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本模型是 M2 输出 / M3+ 输入的唯一格式。
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"""
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# ---- 标识 ----
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source_id: str = Field(..., description="M1 sources.yaml 中的 source id")
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url: str = Field(..., description="文章 URL")
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url_hash: str = Field(..., description="URL 的 SHA1 前 16 位,用作主键")
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# ---- 正文字段 ----
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title: str = Field(..., min_length=1, description="文章标题")
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content: str = Field(..., min_length=1, description="清理后的正文纯文本")
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author: str | None = Field(default=None, description="作者(可选)")
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source_name: str | None = Field(default=None, description="网站中文名")
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# ---- 时间 ----
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publish_time: datetime | None = Field(
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default=None, description="标准化后的发布时间(本地时区或 naive)"
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)
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publish_time_raw: str | None = Field(
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default=None, description="原始时间字符串,便于人工核对"
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)
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extracted_at: datetime = Field(default_factory=datetime.now, description="提取时刻")
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# ---- 辅助 ----
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images: list[str] = Field(default_factory=list, description="正文中的图片 URL")
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word_count: int = Field(default=0, ge=0, description="正文中文字符数")
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item_type: str | None = Field(
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default=None, description="cninfo 数据类型: announcement|research|irm, 新闻源为 None"
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)
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def short_summary(self) -> str:
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"""单行摘要,用于日志。"""
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t = self.publish_time.strftime("%Y-%m-%d") if self.publish_time else "??"
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return f"[{self.source_id}] {t} 《{self.title[:40]}》 {self.word_count}字"
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class ExtractError(Exception):
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"""提取失败时抛出。"""
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def __init__(self, reason: str, url: str | None = None) -> None:
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super().__init__(reason)
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self.reason = reason
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self.url = url
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