回答

一、读取COOKIE

#!/usr/local/python3/bin/python3
# -*- coding: utf-8 -*
from selenium import webdriver
import urllib.parse



chromeOptions = webdriver.ChromeOptions()
chromeOptions.add_argument("--headless")
chromeOptions.add_argument("--remote-debugging-port=9222")
chromeOptions.add_argument('--no-sandbox')
browser = webdriver.Chrome('/usr/bin/chromedriver',chrome_options=chromeOptions)

browser.get("https://www.baidu.com")               #进入相关网站

COOKIEs=browser.get_COOKIEs()

browser.quit()
COOKIEs = {}

for item in tbCOOKIEs:
    COOKIEs[item['name']] = item['value']

print(COOKIEs)

二、写入COOKIE

#!/usr/local/python3/bin/python3
# -*- coding: utf-8 -*
from selenium import webdriver
import urllib.parse



chromeOptions = webdriver.ChromeOptions()
chromeOptions.add_argument("--headless")
chromeOptions.add_argument("--remote-debugging-port=9222")
chromeOptions.add_argument('--no-sandbox')
browser = webdriver.Chrome('/usr/bin/chromedriver',chrome_options=chromeOptions)

browser.get("https://www.baidu.com")               #进入相关网站

browser.add_COOKIE({
        "domain":".baidu.com",
        "name":"COOKIEname",
        "value":"COOKIEvalue",
        "path":'/',
        "expires":None
})
browser.get("https://www.baidu.com")

browser.quit()