how to scroll down a page in selenium python code example

Example 1: python selenium scroll all down

from selenium import webdriver
import time

browser = webdriver.Firefox()
browser.get("https://en.wikipedia.org")
browser.execute_script("window.scrollTo(0,document.body.scrollHeight)")
time.sleep(3)
browser.close()

Example 2: how to scroll by in selenium python

for i in range(20): # adjust integer value for need
       # you can change right side number for scroll convenience or destination 
       driver.execute_script("window.scrollBy(0, 250)")
       # you can change time integer to float or remove
       time.sleep(1)