Python中的Markdown和Markdown2有何区别？

Question

Markdown

Python implementation of Markdown.

This is a Python implementation of John Gruber's Markdown. It is almost completely compliant with the reference implementation, though there are a few known issues. See Features for information on what exactly is supported and what is not. Additional features are supported by the Available Extensions.

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Markdown2

A fast and complete Python implementation of Markdown

markdown2: A fast and complete Python implementation of Markdown.

Markdown is a text-to-HTML filter; it translates an easy-to-read / easy-to-write structured text format into HTML. Markdown's text format is most similar to that of plain text email, and supports features such as headers, emphasis, code blocks, blockquotes, and links.

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有对比么？大神们推荐使用哪个呢？

Answer 1

Markdown2 更快一點？簡直是個笑話。你稍微做一下 benchmark 就不會這樣說了。

這裡是我在我的機器上跑的幾次數據：

Markdown: 47.7091s
Markdown2: 80.5163s

Markdown: 47.9369s
Markdown2: 79.5075s

Markdown: 46.4342s
Markdown2: 78.2267s

它們並沒有本質上的區別，除了 markdown2 自我吹噓了一把，騙了不少人。

我不知道提問者是在尋找一個 markdown 解析器，還是想要單純地做一個對比。如果是單純地做一個對比的話，答案就是 Markdown 更快一點，Markdown2 是單一文件。

但是如果提問者是想找一個更好的 markdown 解析器的話，那選擇還有很多。

• Misaka: A python binding for Sundown. (CPython required)
• Hoedown: A python binding for Hoedown, successor of Misaka.
• Discount: A python binding for Discount. (CPython required)
• cMarkdown: Markdown for Python, accelerated by C. (CPython required)
• Markdown: A pure markdown parser, the very first implementation.
• Markdown2: Another pure markdown parser.
• Mistune: The fastest markdown parser in pure Python

具體的對比可參考這篇文章 Markdown Parsers in Python。

另外完整的 Benchmark 資料請見： https://github.com/lepture/mistune/issues/1

Answer 2

據說是Markdown2更快一些

Answer 3

官方文件說是Markdown2比Markdown 更迅速、更完整。用那個的話，你可以自己選擇，哪個舒服用哪個。就我個人來說，推薦Markdown2，就因為一個字：快

Answer 4

另外說一個差別：

Python-Markdown的結構上比Markdown2好得多，擴充性也好，可以自訂extension。

Answer 5

推薦misaka

python-markdown在解析程式碼區塊時有Bug