selenium: get page source

selenium_get_page_source.py

from selenium import webdriver
from selenium.webdriver.common.proxy import Proxy, ProxyType

URL = "https://www.ozon.ru/category/telefony-i-smart-chasy-15501/?sorting=rating"

# proxy list: https://freeproxylists.net/ru.html
proxy_addr = '93.123.226.23'
proxy_port = '81'

prox = Proxy()
prox.proxy_type = ProxyType.MANUAL
prox.http_proxy = f"{proxy_addr}:{proxy_port}"
#prox.socks_proxy = "ip_addr:port"
#prox.ssl_proxy = f"{proxy_addr}:{proxy_port}"

capabilities = webdriver.DesiredCapabilities.FIREFOX
prox.add_to_capabilities(capabilities)

with webdriver.Firefox(desired_capabilities=capabilities) as driver:
    #driver.maximize_window()
    driver.get(URL)
    pageSource = driver.page_source
    with open("page_source.html", "w", encoding='utf-8') as fileToWrite:
        fileToWrite.write(pageSource)