url = 'https://finance.yahoo.com/q/ks?s=AAL+Key+Statistics'
r = requests.get(url)
soup = bs(r.text)
HTML_MarketCap = soup.find('sup', text='5').parent.parent.find_next_sibling(
    'td').find('span').text
print(HTML_MarketCap)
beautifulsoup parsing - dealing with superscript?