添加无认证代理，以参数形式添加

chromeOptions = webdriver.ChromeOptions() chromeOptions.add_argument('--proxy-server=http://ip:port')
driver = webdriver.Chrome(chrome_options=chromeOptions) 添加认证代理，以插件的形式添加

1、新建扩展文件夹 Chrome-proxy-helper添加两个文件

Chrome-proxy-helper/background.jsmanifest.json 内容如下

（1）background.js

var config = {mode: "fixed_servers",rules: {singleProxy: {scheme: "http",host: "%proxy_host",port: parseInt(%proxy_port)},bypassList: ["foobar.com"]}};chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});function callbackFn(details) {return {authCredentials: {username: "%username",password: "%password"}};
}chrome.webRequest.onAuthRequired.addListener(callbackFn,{urls: ["<all_urls>"]},['blocking']
);

（2）manifest.json

{"version": "1.0.0","manifest_version": 2,"name": "Chrome Proxy","permissions": ["proxy","tabs","unlimitedStorage","storage","<all_urls>","webRequest","webRequestBlocking"],"background": {"scripts": ["background.js"]},"minimum_chrome_version":"22.0.0"
}

2、动态生成插件并使用

# -*- coding: utf-8 -*-import os
import re
import time
import zipfile
from selenium import webdriver# Chrome代理模板插件(https://github.com/RobinDev/Selenium-Chrome-HTTP-Private-Proxy)目录
CHROME_PROXY_HELPER_DIR = 'Chrome-proxy-helper'
# 存储自定义Chrome代理扩展文件的目录

CUSTOM_CHROME_PROXY_EXTENSIONS_DIR = 'chrome-proxy-extensions'def get_chrome_proxy_extension(proxy):"""获取一个Chrome代理扩展,里面配置有指定的代理(带用户名密码认证)proxy - 指定的代理,格式: username:password@ip:port"""m = re.compile('([^:]+):([^\@]+)\@([\d\.]+):(\d+)').search(proxy)if m:# 提取代理的各项参数username = m.groups()[0]password = m.groups()[1]ip = m.groups()[2]port = m.groups()[3]# 创建一个定制Chrome代理扩展(zip文件)if not os.path.exists(CUSTOM_CHROME_PROXY_EXTENSIONS_DIR):os.mkdir(CUSTOM_CHROME_PROXY_EXTENSIONS_DIR)extension_file_path = os.path.join(CUSTOM_CHROME_PROXY_EXTENSIONS_DIR, '{}.zip'.format(proxy.replace(':', '_')))if not os.path.exists(extension_file_path):# 扩展文件不存在，创建zf = zipfile.ZipFile(extension_file_path, mode='w')zf.write(os.path.join(CHROME_PROXY_HELPER_DIR, 'manifest.json'), 'manifest.json')# 替换模板中的代理参数background_content = open(os.path.join(CHROME_PROXY_HELPER_DIR, 'background.js')).read()background_content = background_content.replace('%proxy_host', ip)background_content = background_content.replace('%proxy_port', port)background_content = background_content.replace('%username', username)background_content = background_content.replace('%password', password)zf.writestr('background.js', background_content)zf.close()return extension_file_pathelse:raise Exception('Invalid proxy format. Should be username:password@ip:port')if __name__ == '__main__':# 测试options = webdriver.ChromeOptions()# 添加一个自定义的代理插件（配置特定的代理，含用户名密码认证）options.add_extension(get_chrome_proxy_extension(proxy="username:password@ip:port"))driver = webdriver.Chrome(options=options)# 访问一个IP回显网站，查看代理配置是否生效了driver.get('http://httpbin.org/ip')print(driver.page_source)time.sleep(60)driver.close()driver.quit()