Had some trouble focusing on an element. When selecting an option from dropdown menu, page kept scrolling to bottom.
Did not find a good explanation online. Here is what worked for me
Find the element you want to focus on (in my case link text was : Welcome Everyone) and then send NULL key to that element.
self.driver.find_element_by_link_text("Welcome Everyone").send_keys(Keys.NULL)
If you will be using this solution do not forget to import the Keys module
from selenium.webdriver.common.keys import Keys
helped by this post on stackoverflow.com