Set proxy server with selenium and Chrome

from selenium import webdriver

PROXY = "88.157.149.250:8080" # IP:PORT or HOST:PORT

chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--proxy-server=%s' % PROXY)

chrome = webdriver.Chrome(chrome_options=chrome_options)
chrome.get("http://google.com")

You can open the page https://www.whatismyip.com/my-ip-information/

chrome.get("https://www.whatismyip.com/my-ip-information/")