Question

我想从下表中提取。我在第二次切割后再切6次。总共要提取8个字符串，我需要从下面的示例值61.5，值56.43等。

下面的代码snipplet只给出了第一个值（61.5）。我如何获取剩余的值？

soup.find（“div”，{“class”：“value”}）。text

<td class="flow">
    <div class="heading" style="min-height: 63px;">Dornum</div>
    <div class="data"><div class="value">61.5</div> MSm<sup>3</sup>/d</div>
</td>
<td class="flow">
    <div class="heading" style="min-height: 63px;">Emden EMS</div>
    <div class="data"><div class="value">56.43</div> MSm<sup>3</sup>/d</div>
</td>

Answer 1

使用soup.find_all()获取匹配元素的列表，然后获取每个元素的text属性：

from bs4 import BeautifulSoup

html = '''<td class="flow">
    <div class="heading" style="min-height: 63px;">Dornum</div>
    <div class="data"><div class="value">61.5</div> MSm<sup>3</sup>/d</div>
</td>
<td class="flow">
    <div class="heading" style="min-height: 63px;">Emden EMS</div>
    <div class="data"><div class="value">56.43</div> MSm<sup>3</sup>/d</div>
</td>'''

soup = BeautifulSoup(html)

data = [element.text for element in soup.find_all("div", "value")]

>>> data
[u'61.5', u'56.43']

或者，如果你想要它们作为花车：

data = [float(element.text) for element in soup.find_all("div", "value")]
>>> data
[61.5, 56.43]

Answer 2

 <td class="flow">
 <div class="heading" style="min-height: 63px;">Dornum</div>
 <div class="data"><div class="value">61.5</div> MSm<sup>3</sup>/d</div>
 </td>
 <td class="flow">
 <div class="heading" style="min-height: 63px;">Emden EMS</div>
 <div class="data"><div class="value">56.43</div> MSm<sup>3</sup>/d</div>
 </td>

试试这个：

 temp = soup.select('div[class="value"]') 
 result = []
 for i in temp:
     result.append(i.get_text())

Answer 3

您需要在BeautifulSoup中使用find_all（）获取所有值。

from bs4 import BeautifulSoup

html = '''<td class="flow">
    <div class="heading" style="min-height: 63px;">Dornum</div>
    <div class="data"><div class="value">61.5</div> MSm<sup>3</sup>/d</div>
</td>
<td class="flow">
    <div class="heading" style="min-height: 63px;">Emden EMS</div>
    <div class="data"><div class="value">56.43</div> MSm<sup>3</sup>/d</div>
</td>'''

soup = BeautifulSoup(html)
out=[]
for elem in soup.find_all("div", {"class":"value"}):
    out.append(elem.text)

使用BeautifulSoup从标记中提取字符串

3 个答案: