aiohttp/asyncio测试代理是否可用

#!/usr/bin/env python  
# encoding: utf-8
from proxyPool.db import RedisClient
import asyncio
import aiohttp
import time
try:
    from aiohttp import ClientError,client_exceptions
except:
    from aiohttp import ClientProxyConnectionError as ProxyConnectionError
VALID_STATUS_CODES=[200]
TEST_URL='http://www.baidu.com'
BATCH_TEST_SIZE=100
class Tester(object):
    def __init__(self):
        self.redis=RedisClient()
    async def test_single_proxy(self,proxy):
        """
        测试单个代理
        :param proxy:单个代理
        :return: None
        """
        conn=aiohttp.TCPConnector(verify_ssl=False)
        async with aiohttp.ClientSession(connector=conn) as session:
            try:
                if isinstance(proxy,bytes):
                    proxy=proxy.decode('utf-8')
                real_proxy='http://'+proxy
                print("正在测试",proxy)
                async with session.get(TEST_URL,proxy=real_proxy,timeout=15) as response:
                    if response.status in VALID_STATUS_CODES:
                        self.redis.max(proxy)
                        print("代理可用",proxy)
                    else:
                        self.redis.decrease(proxy)
                        print("请求响应码不合法",proxy)
            except(ClientError,client_exceptions.ClientConnectorError,TimeoutError,AttributeError):
                self.redis.decrease(proxy)
                print("代理请求失败",proxy)

    def run(self):
        """
        测试函数
        :return:None
        """
        print("测试器开始运行")
        try:
            proxies=self.redis.all()
            loop=asyncio.get_event_loop()
            #批量测试
            for i in range(0,len(proxies),BATCH_TEST_SIZE):
                test_proxies=proxies[i:i+BATCH_TEST_SIZE]
                tasks=[self.test_single_proxy(proxy) for proxy in test_proxies]
                loop.run_until_complete(asyncio.wait(tasks))
                time.sleep(5)
        except Exception as e:
            print("测试器发生错误",e.args)