示例：

from urllib import request, parse
from http import cookiejar
from fake_useragent import UserAgent


class Script:

    def __init__(self, proxies=None):
        self.cookie = cookiejar.CookieJar()
        self.handler = request.HTTPCookieProcessor(self.cookie)
        self.opener = request.build_opener(self.handler)
        
 
if proxies:
            proxies_htt = {'http': 'http://'+ proxies, 'https': 'https://' + proxies}
            proxy_s = request.ProxyHandler(proxies_htt)
            self.opener.add_handler(proxy_s)
        request.install_opener(self.opener)

    def openurl(self, url, data=None, headers=None):
        header 
 
= {
            'Host': parse.urlparse(url).hostname,
            'User-Agent': UserAgent().random,
        }
        if headers:
            for key, value in headers.iteritems():
                header[key] = value
        if data:
            req = request.Request(url, data, headers=header)
        
 
else:
            req = request.Request(url, headers=header)
        try:
            backdata = self.opener.open(req, timeout=20).read()
        except:
            return
        try:
            return backdata.decode('utf8')
        except:
            try:
                return backdata.decode('gbk')
            except:
                return backdata

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