BeautifulSoup:"lxml"，"html.parser"和"html5lib"解析器之间有什么区别? [英] BeautifulSoup: what's the difference between 'lxml' and 'html.parser' and 'html5lib' parsers?

问题描述

使用Beautiful Soup时，"lxml"和"html.parser"之间有什么区别?和"html5lib"?

您何时会使用另一种方法以及每种方法的优点?当我使用它们时，它们似乎是可以互换的，但是这里的人纠正了我，我应该使用另一种.我想加强我的理解；我在这里已经阅读了几篇有关此内容的文章，但它们根本没有涉及太多用途.

When would you use one over the other and the benefits of each? When I used each they seemed to be interchangeable, but people here correct me that I should be using a different one. I'd like to strengthen my understanding; I've read a couple posts on here about this but they're not going over the uses much in any at all.

示例:

soup = BeautifulSoup(response.text, 'lxml')

推荐答案

来自 文档 的优缺点汇总表:

From the docs's summarized table of advantages and disadvantages:

1. html.parser - BeautifulSoup(标记，"html.parser")

• 优点:包括电池，体面的速度，宽大(自Python 2.7.3和3.2起).

• Advantages: Batteries included, Decent speed, Lenient (as of Python 2.7.3 and 3.2.)

缺点:不太宽大(在Python 2.7.3或3.2.2之前)

Disadvantages: Not very lenient (before Python 2.7.3 or 3.2.2)

lxml - BeautifulSoup(标记，"lxml")

• 优点:非常快，宽大

• Advantages: Very fast, Lenient

缺点:外部C依赖

html5lib - BeautifulSoup(标记，"html5lib")

• 优点:极为宽松，以与网络浏览器相同的方式解析页面，创建有效的HTML5

• Advantages: Extremely lenient, Parses pages the same way a web browser does, Creates valid HTML5

缺点:非常慢，外部Python依赖

Disadvantages: Very slow, External Python dependency

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