from bs4 import BeautifulSoup
html = '''
<p class="one">1</p>
<div class="one">
<p id="two">2</p>
<p class="one">3</p>
</div>
'''
soup = BeautifulSoup(html, 'html.parser')
print(soup.select('.one')) <p class="one">1</p>
[<p class="one">1</p>, <div class="one"></div>, <p class="one">3</p>]
[<p class="one">1</p>, <p class="one">3</p>]