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  "tagline": "OpenAI tiktoken v0.14.0 源码学习知识包，涵盖双层架构总览、BPE 分词原理、Encoding 核心 API、Rust 原生内核、注册表与模型映射、词表加载缓存、OpenAI 公开词汇体系及教学模块，共 9 篇概念文档与 2 篇实践示例",
  "body": "# tiktoken 源码学习知识包\n\ntiktoken 是 OpenAI 官方的 BPE 分词库，采用「薄 Python 门面 + 重型 Rust 核心」的双层架构（基于 PyO3 绑定）。本知识包基于 tiktoken v0.14.0 源码整理，收入 9 篇概念文档，系统覆盖从安装快速上手、BPE 分词原理、Encoding 核心 API、Rust 原生内核、注册表与模型映射、词表加载缓存，到 OpenAI 公开词汇体系与教学模块的完整学习路径，并附实践示例与事实参考。\n\n## 概念文档\n\n### 入门\n\n- [00 整体架构](concepts/00-overview.md) — tiktoken 双层架构总览、BPE 分词原理与学习路径导览\n- [01 安装与快速上手](concepts/01-getting-started.md) — 安装方式与 `get_encoding` / `encoding_for_model` 双入口最小使用套路\n\n### 核心\n\n- [02 Encoding 对象核心 API](concepts/02-encoding-api.md) — `Encoding` 类全部公开方法：encode 系列与 decode 系列变体及词表相关属性\n- [03 BPE 分词与预切分](concepts/03-bpe-tokenizer.md) — BPE 两阶段（预分词与合并）在 tiktoken 中的落点，`pat_str` 正则与 `mergeable_ranks` 合并\n- [04 Rust 核心 CoreBPE 与性能](concepts/04-rust-core.md) — Rust 原生内核：`CoreBPE` 字段、`byte_pair_encode` 大小输入分派与 GIL 释放\n- [05 注册表与模型映射](concepts/05-registry-model.md) — `registry.get_encoding` Lazy 构造与 `encoding_for_model` 精确映射加前缀降级链\n- [06 BPE 词表加载与缓存](concepts/06-encoder-loading.md) — 读文件多路径、SHA1 缓存键与 SHA256 校验、磁盘原子写及两种词表格式解析\n\n### 进阶\n\n- [07 Op",
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