我有代理authentification，并且要将其添加到chrome webdriver后台模式。 有什么想法吗？
proxy = req.ProxyHandler({'http': f'http://{usr}:{pw}@{new_proxy}', 'https': f'https://{usr}:{pw}@{new_proxy}'})
auth = req.HTTPBasicAuthHandler()
opener = req.build_opener(proxy, auth, req.HTTPHandler)
req.install_opener(opener)
conn = req.urlopen('http://www.google.com/', timeout=1)