blocks|key|323899|text|.find_all()返回所有找到的元素的列表，因此：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|323900|input_tag+=+soup.find_all(attrs={"name"+:+"stainfo"})|code-block|syntax|javascript|323901|input_tag是一个列表(可能只包含一个元素)。根据你到底想要什么，你要么应该这样做：|323902|output+=+input_tag[0]['value']|323903|或者使用.find()方法，它只返回一个(第一个)找到的元素：|323904|input_tag+=+soup.find(attrs={"name":+"stainfo"})
output+=+input_tag['value']|323905|entityMap^0|0|B|0|0|0|9|0|0|4|7|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

<code>.find_all()</code> returns list of all found elements, so:
<pre><code>input_tag = soup.find_all(attrs={&quot;name&quot; : &quot;stainfo&quot;})
</code></pre>
<code>input_tag</code> is a list (probably containing only one element). Depending on what you want exactly you either should do:
<pre><code>output = input_tag[0]['value']
</code></pre>
or use <code>.find()</code> method which returns only one (first) found element:
<pre><code>input_tag = soup.find(attrs={&quot;name&quot;: &quot;stainfo&quot;})
output = input_tag['value']
</code></pre>

blocks|key|1610585|text|如果你知道哪种标签有这些属性，我实际上会建议你用一种节省时间的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1610586|假设标签xyz具有名为“staininfo”属性。|1610587|full_tag+=+soup.findAll("xyz")|code-block|syntax|javascript|1610588|我不想让你明白full_tag是一个列表|1610589|for+each_tag+in+full_tag:
++++staininfo_attrb_value+=+each_tag["staininfo"]
++++print+staininfo_attrb_value|1610590|因此，您可以获得所有标签xyz的staininfo的所有attrb值|1610591|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I would actually suggest you a time saving way to go with this assuming that you know what kind of tags have those attributes.

suppose say a tag xyz has that attritube named "staininfo"..

<pre><code>full_tag = soup.findAll("xyz")
</code></pre>

And i wan't you to understand that full_tag is a list

<pre><code>for each_tag in full_tag:
 staininfo_attrb_value = each_tag["staininfo"]
 print staininfo_attrb_value
</code></pre>

Thus you can get all the attrb values of staininfo for all the tags xyz

blocks|key|1610661|text|如果您想从上面的源中检索多个属性值，您可以使用findAll和列表理解来获取所需的一切：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1610662|import+urllib
f+=+urllib.urlopen("http://58.68.130.147")
s+=+f.read()
f.close()

from+BeautifulSoup+import+BeautifulStoneSoup
soup+=+BeautifulStoneSoup(s)

inputTags+=+soup.findAll(attrs={"name"+:+"stainfo"})
###+You+may+be+able+to+do+findAll("input",+attrs={"name"+:+"stainfo"})

output+=+[x["stainfo"]+for+x+in+inputTags]

print+output
###+This+will+print+a+list+of+the+values.|code-block|syntax|javascript|1610663|entityMap^0|N|7|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

If you want to retrieve multiple values of attributes from the source above, you can use <code>findAll</code> and a list comprehension to get everything you need:

<pre><code>import urllib
f = urllib.urlopen("http://58.68.130.147")
s = f.read()
f.close()

from BeautifulSoup import BeautifulStoneSoup
soup = BeautifulStoneSoup(s)

inputTags = soup.findAll(attrs={"name" : "stainfo"})
### You may be able to do findAll("input", attrs={"name" : "stainfo"})

output = [x["stainfo"] for x in inputTags]

print output
### This will print a list of the values.
</code></pre>

blocks|key|1610698|text|在Python+3.x中，只需对使用find_all获得的tag对象使用get(attr_name)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1610699|xmlData+=+None

with+open('conf//test1.xml',+'r')+as+xmlFile:
++++xmlData+=+xmlFile.read()

xmlDecoded+=+xmlData

xmlSoup+=+BeautifulSoup(xmlData,+'html.parser')

repElemList+=+xmlSoup.find_all('repeatingelement')

for+repElem+in+repElemList:
++++print("Processing+repElem...")
++++repElemID+=+repElem.get('id')
++++repElemName+=+repElem.get('name')

++++print("Attribute+id+=+%25s"+%25+repElemID)
++++print("Attribute+name+=+%25s"+%25+repElemName)|code-block|syntax|javascript|1610700|对XML文件conf//test1.xml，如下所示：|1610701|<?xml+version="1.0"+encoding="UTF-8"+standalone="yes"?>
<root>
++++<singleElement>
++++++++<subElementX>XYZ</subElementX>
++++</singleElement>
++++<repeatingElement+id="11"+name="Joe"/>
++++<repeatingElement+id="12"+name="Mary"/>
</root>|1610702|打印：|1610703|Processing+repElem...
Attribute+id+=+11
Attribute+name+=+Joe
Processing+repElem...
Attribute+id+=+12
Attribute+name+=+Mary|1610704|entityMap^0|1|A|I|8|10|E|0|0|6|F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|T|$]]

In <code>Python 3.x</code>, simply use <code>get(attr_name)</code> on your tag object that you get using <code>find_all</code>:

<pre><code>xmlData = None

with open('conf//test1.xml', 'r') as xmlFile:
 xmlData = xmlFile.read()

xmlDecoded = xmlData

xmlSoup = BeautifulSoup(xmlData, 'html.parser')

repElemList = xmlSoup.find_all('repeatingelement')

for repElem in repElemList:
 print("Processing repElem...")
 repElemID = repElem.get('id')
 repElemName = repElem.get('name')

 print("Attribute id = %s" % repElemID)
 print("Attribute name = %s" % repElemName)
</code></pre>

against XML file <code>conf//test1.xml</code> that looks like:

<pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt;
&lt;root&gt;
 &lt;singleElement&gt;
 &lt;subElementX&gt;XYZ&lt;/subElementX&gt;
 &lt;/singleElement&gt;
 &lt;repeatingElement id="11" name="Joe"/&gt;
 &lt;repeatingElement id="12" name="Mary"/&gt;
&lt;/root&gt;
</code></pre>

prints:

<pre><code>Processing repElem...
Attribute id = 11
Attribute name = Joe
Processing repElem...
Attribute id = 12
Attribute name = Mary
</code></pre>

blocks|key|1610726|text|您还可以使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1610727|import+requests
from+bs4+import+BeautifulSoup
import+csv

url+=+"http://58.68.130.147/"
r+=+requests.get(url)
data+=+r.text

soup+=+BeautifulSoup(data,+"html.parser")
get_details+=+soup.find_all("input",+attrs={"name":"stainfo"})

for+val+in+get_details:
++++get_val+=+val["value"]
++++print(get_val)|code-block|syntax|javascript|1610728|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you can also use this :

<pre><code>import requests
from bs4 import BeautifulSoup
import csv

url = "http://58.68.130.147/"
r = requests.get(url)
data = r.text

soup = BeautifulSoup(data, "html.parser")
get_details = soup.find_all("input", attrs={"name":"stainfo"})

for val in get_details:
 get_val = val["value"]
 print(get_val)
</code></pre>

blocks|key|3019405|text|我在Beautifulsoup+4.8.1中使用它来获取某些元素的所有类属性的值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3019406|from+bs4+import+BeautifulSoup

html+=+"<td+class='val1'/><td+col='1'/><td+class='val2'+/>"

bsoup+=+BeautifulSoup(html,+'html.parser')

for+td+in+bsoup.find_all('td'):
++++if+td.has_attr('class'):
++++++++print(td['class'][0])|code-block|syntax|javascript|3019407|重要的是要注意，即使属性只有一个值，属性键也会检索列表。|3019408|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I am using this with Beautifulsoup 4.8.1 to get the value of all class attributes of certain elements:

<pre><code>from bs4 import BeautifulSoup

html = "&lt;td class='val1'/&gt;&lt;td col='1'/&gt;&lt;td class='val2' /&gt;"

bsoup = BeautifulSoup(html, 'html.parser')

for td in bsoup.find_all('td'):
 if td.has_attr('class'):
 print(td['class'][0])
</code></pre>

Its important to note that the attribute key retrieves a list even when the attribute has only a single value.

blocks|key|1072999|text|对我来说：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1073000|<input+id="color"+value="Blue"/>|code-block|syntax|javascript|1073001|这可以通过下面的代码片段来获取。|1073002|page+=+requests.get("https://www.abcd.com")
soup+=+BeautifulSoup(page.content,+'html.parser')
colorName+=+soup.find(id='color')
print(colorName['value'])|1073003|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

For me:
<pre class="lang-html prettyprint-override"><code>&lt;input id=&quot;color&quot; value=&quot;Blue&quot;/&gt;
</code></pre>
This can be fetched by below snippet.
<pre class="lang-python prettyprint-override"><code>page = requests.get(&quot;https://www.abcd.com&quot;)
soup = BeautifulSoup(page.content, 'html.parser')
colorName = soup.find(id='color')
print(colorName['value'])
</code></pre>

blocks|key|1610810|text|您可以尝试使用名为requests_html的功能强大的新包|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1610811|from+requests_html+import+HTMLSession
session+=+HTMLSession()

r+=+session.get("https://www.bbc.co.uk/news/technology-54448223")
date+=+r.html.find('time',+first+=+True)+#+finding+a+"tag"+called+"time"
print(date)++#+you+will+have:+<Element+'time'+datetime='2020-10-07T11:41:22.000Z'>
#+To+get+the+text+inside+the+"datetime"+attribute+use:
print(date.attrs['datetime'])+#+you+will+get+'2020-10-07T11:41:22.000Z'|code-block|syntax|javascript|1610812|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You could try to use the new powerful package called requests_html:
<pre><code>from requests_html import HTMLSession
session = HTMLSession()

r = session.get(&quot;https://www.bbc.co.uk/news/technology-54448223&quot;)
date = r.html.find('time', first = True) # finding a &quot;tag&quot; called &quot;time&quot;
print(date) # you will have: &lt;Element 'time' datetime='2020-10-07T11:41:22.000Z'&gt;
# To get the text inside the &quot;datetime&quot; attribute use:
print(date.attrs['datetime']) # you will get '2020-10-07T11:41:22.000Z'
</code></pre>

blocks|key|325122|text|你可以试试gazpacho|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|325123|使用pip+install+gazpacho安装它|style|CODE|325124|获取超文本标记语言并使用以下命令生成Soup：|325125|from+gazpacho+import+get,+Soup

soup+=+Soup(get("http://ip.add.ress.here/"))++#+get+directly+returns+the+html

inputs+=+soup.find('input',+attrs={'name':+'stainfo'})++#+Find+all+the+input+tags

if+inputs:
++++if+type(inputs)+is+list:
++++++++for+input+in+inputs:
+++++++++++++print(input.attr.get('value'))
++++else:
+++++++++print(inputs.attr.get('value'))
else:
+++++print('No+<input>+tag+found+with+the+attribute+name="stainfo")|code-block|syntax|javascript|325126|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/maxhumber/gazpacho^0|5|8|0|0|2|K|0|I|4|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@$A|11|B|12|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|13|8|@$A|14|B|15|F|G]]|9|@]|C|$]]|$1|J|3|K|5|L|7|16|8|@]|9|@]|C|$M|N]]|$1|O|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

You can try <a href="https://github.com/maxhumber/gazpacho" rel="nofollow noreferrer">gazpacho</a>:
Install it using <code>pip install gazpacho</code>
Get the HTML and make the <code>Soup</code> using:
<pre class="lang-py prettyprint-override"><code>from gazpacho import get, Soup

soup = Soup(get(&quot;http://ip.add.ress.here/&quot;)) # get directly returns the html

inputs = soup.find('input', attrs={'name': 'stainfo'}) # Find all the input tags

if inputs:
 if type(inputs) is list:
 for input in inputs:
 print(input.attr.get('value'))
 else:
 print(inputs.attr.get('value'))
else:
 print('No &lt;input&gt; tag found with the attribute name=&quot;stainfo&quot;)
</code></pre>

blocks|key|3019533|text|下面是一个如何提取所有a标签的href属性的示例：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3019534|import+requests+as+rq+
from+bs4+import+BeautifulSoup+as+bs

url+=+"http://www.cde.ca.gov/ds/sp/ai/"
page+=+rq.get(url)
html+=+bs(page.text,+'lxml')

hrefs+=+html.find_all("a")
all_hrefs+=+[]
for+href+in+hrefs:
++++#+print(href.get("href"))
++++links+=+href.get("href")
++++all_hrefs.append(links)

print(all_hrefs)|code-block|syntax|javascript|3019535|entityMap^0|B|1|F|4|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Here is an example for how to extract the <code>href</code> attrbiutes of all <code>a</code> tags:
<pre><code>import requests as rq 
from bs4 import BeautifulSoup as bs

url = &quot;http://www.cde.ca.gov/ds/sp/ai/&quot;
page = rq.get(url)
html = bs(page.text, 'lxml')

hrefs = html.find_all(&quot;a&quot;)
all_hrefs = []
for href in hrefs:
 # print(href.get(&quot;href&quot;))
 links = href.get(&quot;href&quot;)
 all_hrefs.append(links)

print(all_hrefs)
</code></pre>

I am trying to extract the content of a single &quot;value&quot; attribute in a specific &quot;input&quot; tag on a webpage. I use the following code:
<pre><code>import urllib
f = urllib.urlopen(&quot;http://58.68.130.147&quot;)
s = f.read()
f.close()

from BeautifulSoup import BeautifulStoneSoup
soup = BeautifulStoneSoup(s)

inputTag = soup.findAll(attrs={&quot;name&quot; : &quot;stainfo&quot;})

output = inputTag['value']

print str(output)
</code></pre>
I get a TypeError: list indices must be integers, not str
even though from the Beautifulsoup documentation i understand that strings should not be a problem here... but i a no specialist and i may have misunderstood.
Any suggestion is greatly appreciated!

Extracting an attribute value with beautifulsoup

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试提取网页上特定"input“标签中的单个"value”属性的内容。我使用以下代码：import urllibf = urllib.urlopen("http://58.68.130.147")s = f.read()f.close()from BeautifulSoup import BeautifulSto...

问使用漂亮汤提取属性值
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问使用漂亮汤提取属性值EN