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粉碎、reg和html:对线上的最后标签进行对比
原标题:Python, regex and html: match final tag on line
  • 时间:2011-11-10 20:31:00
  •  标签:
  • python
  • regex

Im 混淆了猪肉/无血品。

“Given multiline html, 退回每一行的最后标签

我认为这样做是正确的:

re.findall( <.*?>$ , html, re.MULTILINE)

I m irked,因为我期望有一个单一标签清单,例如:

"</html>", "<ul>", "</td>".

My O Reilly s Pocket Reference 说:*? wil “match 0 or more倍,但尽可能少

因此,我为什么会感到贪 gr,即有些(但并非全部)不止一个方面对等?

最佳回答

Your problem stems from the fact that you have an end-of-line anchor ( $ ). The way non-greedy matching works is that the engine first searches for the first unconstrained pattern on the line ( < in your case). It then looks for the first > character (which you have constrained, with the $ anchor, to be at the end of the line). So a non-greedy * is not any different from a greedy * in this situation.

由于你无法从您的会费中提取这笔钱(你正在寻找一条线上的最后标子),你将需要用不同的笔记......见@Mark的答复。 < [^><]*>$将投入使用。

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