Try to post the html code,then is easier to test it out.
from bs4 import BeautifulSoup
# Simulate a web page
html = '''\
<body>
<h3 class="r">
<a href='https://python-forum.io' ping='some url'>Learn Python</a>
</div>
</body>'''
soup = BeautifulSoup(html, 'lxml')
Use:
>>> r = soup.find(class_="r")
>>> r
<h3 class="r">
<a href="https://python-forum.io" ping="some url">Learn Python</a>
</h3>
>>> a = r.find('a')
>>> a
<a href="https://python-forum.io" ping="some url">Learn Python</a>
>>> a.get('href')
'https://python-forum.io'
>>> a.get('ping')
'some url'
>>> a.text
'Learn Python'