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English(EN) We read the robots.txt of 2,347 MCP hosts: Python 3.12's parser gets 252 endpoints wrong

Python 的 robots.txt 解析器误解标准,允许了不允许的端点

对 2,347 个主机上的 robots.txt 文件进行的最新分析显示,Python 的 `urllib.robotparser` 在解释该协议方面与 RFC 9309 标准存在显著差异。该标准规定最具体的规则获胜,并对 '*' 和 '$' 字符进行特殊处理,行顺序无关紧要。然而,Python 的旧解析器错误地优先处理第一个匹配规则,并将 '*' 和 '$' 视为字面字符。这导致旧解析器错误地允许了 250 个端点,而仅错误地禁止了 2 个端点。该问题已在新版本的 Python 中得到解决,修复程序于 2026 年 5 月合并并向后移植。 AI

影响 robots.txt 解析不正确可能会影响用于 AI 训练的网络抓取和数据收集。

排序理由 对软件组件遵守技术标准的分析。[lever_c_demoted from research: ic=1 ai=0.4]

在 dev.to — MCP tag 阅读 →

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Python 的 robots.txt 解析器误解标准,允许了不允许的端点

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Signal score
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Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
对软件组件遵守技术标准的分析。[lever_c_demoted from research: ic=1 ai=0.4]
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Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
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报道来源 [1]

  1. dev.to — MCP tag TIER_1 English(EN) · Alex ·

    We read the robots.txt of 2,347 MCP hosts: Python 3.12's parser gets 252 endpoints wrong

    <p>Two crawlers that log MCP servers compared notes on 1 November, and one server didn't add up. <a href="http://www.apier.no" rel="noopener noreferrer">www.apier.no</a> had changed its tool definitions twice in a day. Our log, HISTOR, recorded both changes. ScraperWatch, which h…