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 更快一点？简直是一个笑话。你稍微做一下 benchmark 就不会这样说了。

这里是我在我的机器上跑的几次数据：

Markdown: 47.7091s
Markdown2: 80.5163s

Markdown: 47.9369s
Markdown2: 79.5075s

Markdown: 46.4342s
Markdown2: 78.2267s

它们并没有本质上的区别，除了 markdown2 自我吹嘘了一把，骗了不少人。

我不知道提问者是在寻找一个 markdown 解析器，还是想要单纯地做一个对比。如果是单纯地做一个对比的话，答案就是 Markdown 更快一点，Markdown2 是单文件。

但是如果提问者是想找一个更好的 markdown 解析器的话，那选择还有很多。

• 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

具体的对比可参考这篇文章 Markdown Parsers in Python。

另外完整的 Benchmark 数据请查看： https://github.com/lepture/mistune/issues/1

Answer 2

据说是Markdown2更快一些

Answer 3

官方文档说是Markdown2比Markdown 更加迅速和完整。用那个的话，你可以自己选择，哪个舒服用哪个。就我个人来说，推荐Markdown2，就因为一个字：快

Answer 4

另外说一个区别：

Python-Markdown的结构上比Markdown2好得多，扩展性也好，可以自定义extension。

Answer 5

推荐misaka

python-markdown在解析代码块时有Bug