python lib

I've been working on some interesting python stuff at Mozilla and one task recently called for called for rending a page and then finding elements with a URL attribute value (like img[src] or a[href]) and ensuring they become absolute URLs.  One problem I encountered when using html5lib was that LINK and IMG elements were being skipped when I tokenized the HTML.  After browsing through the html5lib source code, I found a variable called voidElements which included both LINK and IMAGE:

我一直在Mozilla上研究一些有趣的python东西，最近又要求执行一项任务，该任务是租用页面，然后查找具有URL属性值的元素(例如img [src]或a [href])，并确保它们成为绝对URL 。 使用html5lib时遇到的一个问题是，当标记HTML时，将跳过LINK和IMG元素。 浏览html5lib源代码后，我发现了一个名为voidElements的变量，其中包含LINK和IMAGE：

voidElements = frozenset((    "base",    "command",    "event-source",    "link",    "meta",    "hr",    "br",    "img",    "embed",    "param",    "area",    "col",    "input",    "source"))

When I commented out those two elements, they were found upon next run of my routine, meaning their presence in the set were causing me problems.  Here's how I skirted the issue:

当我注释掉这两个元素时，它们是在我的例行程序的下一次运行中发现的，这意味着它们在集合中的出现给我带来了麻烦。 这是我避开问题的方式：

new_void_set = set()for item in html5lib_constants.voidElements:	new_void_set.add(item)new_void_set.remove('link')new_void_set.remove('img')html5lib_constants.voidElements = frozenset(new_void_set)

Since voidElements is a frozenset, I couldn't simply remove LINK and IMG, so I needed to create a new frozenset without those elements.  Let me know if there's a more python-ish way of creating this frozen set.  In an event, delving into the deep recesses of html5lib paid off and I accomplished the goal!

由于voidElements是冻结集，因此我不能简单地删除LINK和IMG，因此我需要创建一个没有这些元素的新冻结集。 让我知道是否还有一种更Python化的方式来创建此冻结集。 在一个事件中，深入研究html5lib的深层收获是有回报的，我实现了目标！

翻译自:

python lib