计算平均身高和div标签的平均宽度 [英] compute the average height and the average width of div tag

问题描述

我需要得到一个HTML文档的平均股利高度和宽度。

I have need to get the average div height and width of an html doc.

我也尝试这种解决方案，但它不工作：

I have try this solution but it doesn't work:

import numpy as np
average_width = np.mean([div.attrs['width'] for div in my_doc.get_div() if 'width' in div.attrs])
average_height = np.mean([div.attrs['height'] for div in my_doc.get_div() if 'height' in div.attrs])
print average_height,average_width

在 get_div 办法返回所有的名单通过DIV的beautifulSoup的 find_all 法

the get_div method return the list of all div retrieved by the find_all method of beautifulSoup

下面是一个例子：

print my_doc.get_div()[1]

<div style="position:absolute; border: textbox 1px solid; writing-mode:lr-tb; left:45px; top:81px; width:127px; height:9px;">
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">Journal of     Infection (2015) 
    </span>
    <span style="font-family: EICMDB+AdvTrebu-B; font-size:8px">xx</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">, 1</span>
    <span style="font-family: EICMDD+AdvPS44A44B; font-size:7px">e</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">4
    <br/>
    </span>
</div>

当我得到的属性，它完美

when i get the attributes, it works perfectly

print my_doc.get_div()[1].attrs

{u'style': u'position:absolute; border: textbox 1px solid; writing-mode:lr-tb; left:45px; top:81px; width:127px; height:9px;'}

但是当我试图获取值

but when i try to get the value

print my_doc.get_div()[1].attrs['width']

我得到一个错误：

I get an error :

KeyError: 'width'

但我不理解，因为当我检查的类型：

but i don't understand because when i check the type :

print type(my_doc.get_div()[1].attrs)

这是一本字典，＆LT;键入'字典'＆GT;

推荐答案

有可能是更好的办法 -

There may be better way-

路-1

下面是我的测试code提取的宽度和高度

Below is my tested code to extract width and height.

from bs4 import BeautifulSoup

html_doc = '''<div style="position:absolute; border: textbox 1px solid; writing-mode:lr-tb; left:45px; top:81px; width:127px; height:9px;">
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">Journal of     Infection (2015) 
    </span>
    <span style="font-family: EICMDB+AdvTrebu-B; font-size:8px">xx</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">, 1</span>
    <span style="font-family: EICMDD+AdvPS44A44B; font-size:7px">e</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">4
    <br/>
    </span>
</div>'''

soup = BeautifulSoup(html_doc,'html.parser')    
my_att = [i.attrs['style'] for  i in soup.find_all("div")]
dd = ''.join(my_att).split(";")
dd_cln= filter(None, dd)
dd_cln= [i.strip() for i in dd_cln ]
my_dict = dict(i.split(':') for i  in dd_cln)
print my_dict['width']

路-2
描述使用常规的前pression <一个href=\"http://stackoverflow.com/questions/9271365/how-to-pull-out-css-attributes-from-inline-styles-with-beautifulsoup\">here.

工作code -

Working code-

import numpy as np
import re
from bs4 import BeautifulSoup

html_doc = '''<div style="position:absolute; border: textbox 1px solid; writing-mode:lr-tb; left:45px; top:81px; width:127px; height:9px;">
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">Journal of     Infection (2015) 
    </span>
    <span style="font-family: EICMDB+AdvTrebu-B; font-size:8px">xx</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">, 1</span>
    <span style="font-family: EICMDD+AdvPS44A44B; font-size:7px">e</span>
    <span style="font-family: EICMDA+AdvTrebu-R; font-size:8px">4
    <br/>
    </span>
</div>'''

soup = BeautifulSoup(html_doc,'html.parser')    
my_att = [i.attrs['style'] for  i in soup.find_all("div")]
css = ''.join(my_att)
print css
width_list = map(float,re.findall(r'(?<=width:)(\d+)(?=px;)', css))
height_list = map(float,re.findall(r'(?<=height:)(\d+)(?=px;)', css))
print np.mean(height_list)
print np.mean(width_list)

这篇关于计算平均身高和div标签的平均宽度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！