有没有办法在beautifulsoup python中找到最出现/最常见的span样式？ [英] Is there a way to find the most appeared/common span style in beautifulsoup python?

问题描述

因为我需要处理不同风格的许多pdf文件，所以我假设主要内容将采用最常见的span / common span风格。

一种在beautifulsoup python中找到最出现的span样式的方法？

这是我用来查找特定跨度样式的命令：

  font-family：CBCDEE + ArialMT; 
 font-size：12px'：
 spans = soup.find_all（'span'，
 attrs = {'style'：'font-family：CBCDEE + ArialMT; font-size：12px '}）`
  

有什么方法可以找到最常出现/常见的一种？或基本上，有没有办法让跨样式列表和计数不同风格的外观？

非常感谢。

解决方案

您可以使用Python Counter（） 对所有不同的样式进行计数，然后显示 most_common（） 元素为如下：

  from bs4从集合导入BeautifulSoup 
导入计数器
 
 html = 
< span style =font-family：CBCDEE + ArialMT; font-size：12px> 1< / span> 
< span style =font-family：CBCDEE + ArialMT; font-size：14px> 2< / span> 
< span style =font-family：CBCDEE + ArialMT; font-size：14px> 3< / span> 
< span style =font-family：CBCDEE + Arial; font-size：12px> 4< / span> 
< span style =font-family：CBCDEE + ArialMT; font-size：12px> 5< / span>
 
 soup = BeautifulSoup（html，html.parser）
 style_counts = Counter（）
 
 for soup.find_all（'span'，style = True）：
 style_counts [span ['style']] + = 1 
 
 print style_counts.most_common（1） [b] b 
 
 
 
 
 
在这个例子中，它会显示：
 
 
  font-family：CBCDEE + ArialMT; font-size：12px 
  
 
As I need to proceed many pdfs with different styles, I have an assumptions that the main content will be under the most appeared/common span style.

Is there a way to find the most appeared span style in beautifulsoup python?

This is a command I used to find a specific span style:
 font-family: CBCDEE+ArialMT; 
 font-size:12px':
 spans = soup.find_all('span',
                       attrs={'style': 'font-family: CBCDEE+ArialMT; font-size:12px'})`
Any ways to find the most appeared/common one? or basically, is there a way to have the span style list and count the appearance of different styles?

Many thanks.
解决方案
You could use a Python Counter() to count all of the different styles and then display the most_common() element as follows:
from bs4 import BeautifulSoup
from collections import Counter

html = """
    <span style="font-family: CBCDEE+ArialMT; font-size:12px">1</span>
    <span style="font-family: CBCDEE+ArialMT; font-size:14px">2</span>
    <span style="font-family: CBCDEE+ArialMT; font-size:14px">3</span>
    <span style="font-family: CBCDEE+Arial; font-size:12px">4</span>
    <span style="font-family: CBCDEE+ArialMT; font-size:12px">5</span>"""

soup = BeautifulSoup(html, "html.parser")    
style_counts = Counter()

for span in soup.find_all('span', style=True):
    style_counts[span['style']] += 1

print style_counts.most_common(1)[0][0]
For this example it would display:
font-family: CBCDEE+ArialMT; font-size:12px


                        
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