use selenium in scrapy webdriver

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

browser = webdriver.Firefox()

browser.get('http://www.yahoo.com')
assert 'Yahoo' in browser.title

elem = browser.find_element_by_name('p')  # Find the search box
elem.send_keys('seleniumhq' + Keys.RETURN)

browser.quit()

driver = webdriver.Chrome()
driver.get("http://www.ask.com")

print driver.title
inputElement = driver.find_element_by_name("q")

# type in the search
inputElement.send_keys("baseball hats")
# submit the form (although google automatically searches now without submitting)
inputElement.submit()

try:
    WebDriverWait(driver, 10).until(EC.title_contains("baseball"))
    print driver.title
    output = driver.page_source
    print(output)
finally:
    driver.quit()

iframes = driver.find_elements_by_tag_name("iframe")

for iframe in iframes
    driver.switch_to_default_content()
    driver.switch_to_frame(iframe)

    output = driver.page_source
    print(output)