Extract `src` attribute from `img` tag using BeautifulSoup

问题

<div class="someClass">
    <a href="href">
        <img alt="some" src="some"/>
    </a>
</div>

I use bs4 and I cannot use a.attrs['src'] to get the src, but I can get href. What should I do?

回答1:

You can use BeautifulSoup to extract src attribute of an html img tag. In my example, the htmlText contains the img tag itself but this can be used for a URL too along with urllib2.

For URLs

from BeautifulSoup import BeautifulSoup as BSHTML
import urllib2
page = urllib2.urlopen('http://www.youtube.com/')
soup = BSHTML(page)
images = soup.findAll('img')
for image in images:
    #print image source
    print image['src']
    #print alternate text
    print image['alt']

For Texts with img tag

from BeautifulSoup import BeautifulSoup as BSHTML
htmlText = """<img src="https://src1.com/" <img src="https://src2.com/" /> """
soup = BSHTML(htmlText)
images = soup.findAll('img')
for image in images:
    print image['src']

回答2:

A link doesn't have attribute src you have to target actual img tag.

import bs4

html = """<div class="someClass">
    <a href="href">
        <img alt="some" src="some"/>
    </a>
</div>"""

soup = bs4.BeautifulSoup(html, "html.parser")

# this will return src attrib from img tag that is inside 'a' tag
soup.a.img['src']

>>> 'some'

# if you have more then one 'a' tag
for a in soup.find_all('a'):
    if a.img:
        print(a.img['src'])

>>> 'some'

来源：https://stackoverflow.com/questions/43982002/extract-src-attribute-from-img-tag-using-beautifulsoup

标签

python

regex

bs4