🌐 [translation-sync] [pandas_panel] Describe the single .replace() call, not a loop

[mmcky]

Automated Translation Sync

This PR contains automated translations from QuantEcon/lecture-python-programming.

Source PR

#645 - [pandas_panel] Describe the single .replace() call, not a loop

Files Updated

• ✏️ lectures/pandas_panel.md
• ✏️ .translate/state/pandas_panel.md.yml

Details

• Source Language: en
• Target Language: zh-cn
• Model: claude-sonnet-5

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This PR was created automatically by the translation action.

[github-actions]

✅ Translation Quality Review

Verdict: PASS | Model: claude-sonnet-5 | Date: 2026-10-12
Routing: auto-merge — no gating findings; floors met
Shadow gate: would auto-merge (recorded only; no action taken)

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📝 Translation Quality

Criterion	Score
Accuracy	9/10
Fluency	9/10
Terminology	9/10
Formatting	10/10
Overall	9.2/10

Summary: “合并数据框与填充 NaN 值”这一修改章节的翻译质量很高，术语准确、行文流畅，代码块与 MyST 格式均完整保留，未发现影响理解的错误。 该节标题“合并数据框与填充 NaN 值”准确传达了原文含义，术语“merge”“NaN”等处理恰当 对 pandas 方法名（如 .map()、.fillna()、.replace()）保留了原始代码格式，未做不必要的翻译 左连接、右连接、内连接、外连接等专业术语翻译准确且符合中文技术文档习惯 中文标点符号使用规范，行内代码与中文文本之间间距处理得当

Suggestions:

• [nit · terminology] lectures/pandas_panel.md — ## 合并数据框与填充 NaN 值: 英文原文中“using country information”等短语中的"country"均被统一译为“国家”，与词汇表及上下文一致，整体术语使用准确。

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🔍 Diff Quality

Check	Status
Scope Correct	✅
Position Correct	✅
Structure Preserved	✅
Heading-map Correct	✅
Overall	10/10

Summary: The single sentence change (rewording about .replace() usage) was correctly translated and positioned in the same location within the 'Merging Dataframes and Filling NaNs' section, with no unrelated changes.

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This review was generated automatically by action-translation review mode.

[Copilot]

🟢 Approval recommended

The reworded translation accurately matches the single .replace() call in the adjacent code, and the state file metadata update is consistent with the PR's sync metadata.

0 open findings

What changed in this PR

This is an automated translation-sync PR that propagates upstream source PR QuantEcon/lecture-python-programming#645 into the Simplified Chinese lecture set. It corrects the Chinese description of the .replace() usage so that it describes a single .replace() call that takes a list, rather than iterating/looping over a list of continent values, matching the actual code on line 287 (merged['Continent'].replace(to_replace=replace, value='America')).

Changes:

• Updated the sentence preceding the .replace() code cell from "遍历要替换的大洲值列表" (loop over the list) to "传入要替换的大洲值列表" (pass in the list), aligning the prose with the single-call code.
• Updated the translation state file (source-sha, synced-at, and tool-version) to reflect the new sync.

File	Description
lectures/​pandas_panel.md	Reworded the explanation of .replace() to describe a single call taking a list instead of a loop, consistent with the code.
.translate/​state/​pandas_panel.md.yml	Updated sync metadata (source SHA, synced-at date, tool version) for the translation sync.

🧠 Review effort: Balanced

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