Selenium Scroll down on Newly Opened Body - python-3.x

Question

I am working with Selenium python, and would like to scroll down on a page after clicking an element. Clicking the element gives a pop-up menu, and then when I try some scrolling methods they scroll on the original page.
I have selected the body of the new element that has appeared and tried this:
from selenium import webdriver
from selenium import Keys
driver = webdriver.get(url)
button = driver.find_element_by_xpath(pathto)
button.click()
body = driver.find_element_by_css('body')
body.send_keys(Keys.PAGE_DOWN)
This does not actually do anything as is. However, if I first manually click on the new popup element before doing body.send_keys(Keys.PAGE_DOWN), it does scroll.
One way I have resolved this is using ActionChains to right click on the body before scrolling down. Directly using .click() on the body does not work as it clicks a link in the body.
Are there any better ways to do this? In particular, I am somewhat afraid that the right click menu that opens up when I use my current method may mess with the rest of the scraping. Is there at least a method to guarantee that it does not interfere? Another solution could be somehow "selecting" or clicking on the body element within selenium, so are there any suggestions for this?

Answer 1

You could try using END key instead of DOWN key. It's worth a shot:
from selenium.webdriver.common.keys import Keys
driver = webdriver.get(url)
button = driver.find_element_by_xpath(pathto)
button.click()
driver.find_element_by_tag_name('body').send_keys(Keys.END)
You also may need to click the pop-up in order to focus it first:
from selenium.webdriver.common.keys import Keys
driver = webdriver.get(url)
button = driver.find_element_by_xpath(pathto)
button.click()
# click popup menu to get it into focus
popup_menu = driver.find_element_by_xpath(pathToPopupMenu)
popup_menu.click()
driver.find_element_by_tag_name('body').send_keys(Keys.END)