Question

How can I get the specific item with same Class name and attributes?

I need to get these 3 items

April 14, 2013

580

Fort Pierce, FL

<dl class="pairsJustified">
<dt>Joined:</dt>
<dd>Apr 14, 2013</dd>
</dl>
<dl class="pairsJustified">
<dt>Messages:</dt>
<dd><a href="search/member?user_id=13302" class="concealed" 
rel="nofollow">580</a></dd>
</dl>

<dl class="pairsJustified">
<dt>Location:</dt>
<dd>
<a href="misc/location-info?location=Fort+Pierce%2C+FL" target="_blank" 
rel="nofollow noreferrer" itemprop="address" class="concealed">Fort 
Pierce, FL</a>

Answer 1

Using they lie under the <dd> tag, using .find_all():

from bs4 import BeautifulSoup

test = '''<dl class="pairsJustified">
<dt>Joined:</dt>
<dd>Apr 14, 2013</dd>
</dl>
<dl class="pairsJustified">
<dt>Messages:</dt>
<dd><a href="search/member?user_id=13302" class="concealed" 
rel="nofollow">580</a></dd>
</dl>

<dl class="pairsJustified">
<dt>Location:</dt>
<dd>
<a href="misc/location-info?location=Fort+Pierce%2C+FL" target="_blank" 
rel="nofollow noreferrer" itemprop="address" class="concealed">Fort Pierce, FL</a>'''

soup = BeautifulSoup(test, 'html.parser')
data = soup.find_all("dd")
for d in data:
    print(d.text.strip())

OUTPUT:

Apr 14, 2013
580
Fort Pierce, FL

Answer 2

这是一个很好的起点：

In [18]: for a in response.css('.extraUserInfo'):
    ...:     print(a.css('*::text').extract())
    ...:     print('\n\n\n')
    ...:     
['\n', '\n', '\n', '\n']  # <--this (and other outputs like this) is because there is an extra `extraUserInfo` class block above the desired info block if the user has a user group picture/avatar below their username




['\n', '\n', 'Joined:', '\n', 'Mar 24, 2013', '\n', '\n', '\n', 'Messages:', '\n', '6,747', '\n', '\n']




['\n', '\n', '\n', '\n']




['\n', '\n', 'Joined:', '\n', 'Mar 24, 2013', '\n', '\n', '\n', 'Messages:', '\n', '6,747', '\n', '\n']




['\n', '\n', 'Joined:', '\n', 'Apr 14, 2013', '\n', '\n', '\n', 'Messages:', '\n', '580', '\n', '\n', '\n', 'Location:', '\n', '\n', 'Fort Pierce, FL', '\n', '\n', '\n']




['\n', '\n', 'Joined:', '\n', 'Oct 20, 2012', '\n', '\n', '\n', 'Messages:', '\n', '2,476', '\n', '\n', '\n', 'Location:', '\n', '\n', 'Philadelphia, PA', '\n', '\n', '\n']




['\n', '\n', 'Joined:', '\n', 'Dec 11, 2012', '\n', '\n', '\n', 'Messages:', '\n', '2,938', '\n', '\n', '\n', 'Location:', '\n', '\n', 'Colorado', '\n', '\n', '\n']




['\n', '\n', 'Joined:', '\n', 'Sep 30, 2016', '\n', '\n', '\n', 'Messages:', '\n', '833', '\n', '\n', '\n', 'Location:', '\n', '\n', 'Indiana', '\n', '\n', '\n']


...

有很多方法可以解决这个问题。稍微摆弄一下即可将数据格式化为您喜欢的格式。上面的方法只是一个很好的起点，因为有许多行只将换行符列表作为输出，这是因为（看来）用户信息会阻止用户拥有用户组图像（如亚利桑那州的特斯拉）的地方，然后{ {1}}类也用于对html块进行分组。会有更好的方法将其分组...

基本上，response.css（'。extraUserInfo'）将聚集所有类为extraUserInfo的块，这似乎是保存您要查找的用户信息的块。使用extraUserInfo伪选择器从那里提取所有基础文本，并解析数组。

如果仔细看一下html结构，肯定有更好的方法来解决此问题，因此您提取它的方式可以减少以后的处理工作，但这应该可以使您走上正确的道路。 CSS选择器或xpath文档应该有很大帮助。

How to get specific item having same class name and attributes

2 个答案: