Python + Selenium Script to download pictures from a Yahoo group

GetYahooPics.py

from selenium import webdriver
import time

driver = webdriver.Chrome("drivers\chromedriver.exe")

driver.set_page_load_timeout(10)
driver.get("https://groups.yahoo.com/neo/groups/oresis_alumni/photos/photostream")
time.sleep(30)

n = 1
while 1:
    print n

    li_elem = driver.find_element_by_css_selector('li.position.loaded.active')
    dl_elem = li_elem.find_element_by_xpath('.//*[@aria-label="Download"]')

    driver.execute_script("arguments[0].click();", dl_elem)   
    time.sleep(4)

    next_elem = driver.find_element_by_xpath('//*[@aria-label="Next"]')
    driver.execute_script("arguments[0].click();", next_elem)

    time.sleep(4)
    n = n + 1

driver.quit()