python_tutorial_adding_proxies.py

from selenium import webdriver 

# other imports here
PROXY = "127.63.13.19:3184" #HOST:PORT or IP:PORT 
chrome_options = webdriver.ChromeOptions() 
chrome_options.add_argument('--proxy-server=%s' % PROXY) 
chrome = webdriver.Chrome(options=chrome_options) 
chrome.get("https://www.reddit.com/") 

# more code here