import requests, bs4

res = requests.get('http://finance.yahoo.com/q/is?s=PG+Income+Statement&annual')
print res.raise_for_status()

soup = bs4.BeautifulSoup(res.text, 'html.parser')

#css path for the revenues in year 2015 of PG
elems = soup.select('#yfncsumtab > tbody > tr:nth-child(2) > td > table.yfnc_tabledata1 > tbody > tr > td > table > tbody > tr:nth-child(2) > td:nth-child(2) > strong')

print elems[0].text.strip()