beautifulsoup(driver.page_source 'html.parser')
In [8]: from bs4 import BeautifulSoup
In [9]: from selenium import webdriver
In [10]: driver = webdriver.Firefox()
In [11]: driver.get('http://news.ycombinator.com')
In [12]: html = driver.page_source
In [13]: soup = BeautifulSoup(html)
In [14]: for tag in soup.find_all('title'):
....: print tag.text
....:
....:
Hacker News