Selenium click on popup button???

[Larz60+]

Actually, I posted the wrong example, should have been and it uses css selector:

page_button_css = 
    'mainContent > table:nth-child(5) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(3) > font:nth-child(1) > a:nth-child(1)'
next_page = self.browser.find_element(By.PARTIAL_LINK_TEXT, 'Next 250')
ActionChains(self.browser).move_to_element(next_page)
next_page.click()

the imports needed are:

from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By