在两个字符串之间获取字符串

Question

<p>I'd like to find the string between the two paragraph tags.</p><br><p>And also this string</p>

我该如何获取第一个和第二个段落标签之间的字符串？然后，我该如何获取第二个段落标签之间的字符串？

- Zorgan

Answer 1

正则表达式

import re
matches = re.findall(r'<p>.+?</p>',string)

以下是您的文本在控制台中运行的内容。

>>>import re
>>>string = """<p>I'd like to find the string between the two paragraph tags.</p><br><p>And also this string</p>"""
>>>re.findall('<p>.+?</p>',string)
["<p>I'd like to find the string between the two paragraph tags.</p>", '<p>And also this string</p>']

- Isdj

---

我已经给你点了赞，但请更正第一个片段中的拼写错误。应该是 </p>。 - gonczor

这可能听起来很蠢，但为什么这个不起作用呢？split = re.findall('<p>.+?</p>',content)......second = split[1]......它给了我一个“索引超出范围”的错误。我该如何获取第二个元素？ - Zorgan

@Zorgan，你改过内容了吗？ 它在我的控制台上运行正常：>>> split = re.findall('

(.+?)

',string) >>> split[1] 'And also this string' - Isdj

是的，那是我的内容，我已经修复了。谢谢。 - Zorgan

Answer 2

如果您想获取位于p标签之间的字符串（不包括 p 标签），那么请在findall方法中的.+?周围添加括号。

import re
    string = """<p>I'd like to find the string between the two paragraph tags.</p><br><p>And also this string</p>"""
    subStr = re.findall(r'<p>(.+?)</p>',string)
    print subStr

结果

["I'd like to find the string between the two paragraph tags.", 'And also this string']

- Rich Rajah

---

太棒了。正是我需要的。 - JayJay123

Answer 3

在<p>和</p>之间

In [7]: content = "<p>I'd like to find the string between the two paragraph tags.</p><br><p>And also this string</p>"

In [8]: re.findall(r'<p>(.+?)</p>', content)
Out[8]: 
["I'd like to find the string between the two paragraph tags.",
 'And also this string']

- itzMEonTV