美丽汤中是否有允许您查找特定标签索引的功能<p>

我想获得冲击列表中第一个对象的<p>标记的索引。一个人会怎么做呢？

from bs4 import BeautifulSoup
import re

data = '''
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Instruments</title>
</head>
<body>
    <p> Guitars are string instruments </p>
    <p> Saxophones are woodwind instruments </p>
    <p> Drums are percussion instruments </p>
    <p> Pianos are percussion instruments</p>
</body>
'''
soup = BeautifulSoup(data)
pattern = '(?=.*percussion).*'
percussion = soup.findAll(string=re.compile(pattern))
print(percussion[0].parent.name]

使用.index方法。例如：

from bs4 import BeautifulSoup

data = """
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Instruments</title>
</head>
<body>
    <p> Guitars are string instruments </p>
    <p> Saxophones are woodwind instruments </p>
    <p> Drums are percussion instruments </p>
    <p> Pianos are percussion instruments</p>
</body>
"""
soup = BeautifulSoup(data, "html.parser")
percussion_p = soup.find("p", text=lambda t: "percussion" in t)
all_p = soup.find_all("p")
print('Index of <p> with text "percussion" is:', all_p.index(percussion_p))

打印(0索引(：

Index of <p> with text "percussion" is: 2

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