<p>Example of a paragraph element.</p>
<ul>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ul>

p: Example of a paragraph element.
ul:
   li:Coffee
   li:Tea
   li:Milk

html = '''<p>Example of a paragraph element.</p>
<ul>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ul>'''


from bs4 import BeautifulSoup

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

for tag in soup.find_all():
    print (tag.name + ':' + tag.text)

p:Example of a paragraph element.
ul:
Coffee
Tea
Milk

li:Coffee
li:Tea
li:Milk