BeautifulSoup4, How to get an HTML tag with specific class.

[snippsat]

Edit this is merge of Threads,so my answer is same as @stranac.
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Can use CSS selectors to match the exact class name.

from bs4 import BeautifulSoup

html = '''\
<img class="this" alt="this" src="this_source1.gif">
<img class="this" alt="this" src="this_source2.gif">
<img class="this" alt="this" src="this_source3.gif">
<img class="this and that" alt="not this" src="this__and_that_source1.gif">
<img class="this and that" alt="not this" src="this__and_that_source2.gif">
<img class="this and that" alt="not this" src="this__and_that_source3.gif">'''

soup = BeautifulSoup(html, 'lxml')
only_this = soup.select('img[class="this"]')

Test:

>>> only_this
[<img alt="this" class="this" src="this_source1.gif"/>,
 <img alt="this" class="this" src="this_source2.gif"/>,
 <img alt="this" class="this" src="this_source3.gif"/>]

>>> [i.get('src') for i in only_this]
['this_source1.gif', 'this_source2.gif', 'this_source3.gif']