Build a simple proxy pool using Python-Python Tutorial-php.cn

In fact, every time I crawl something, I am very afraid that my IP will be blocked, so I have to set the time delay every time. It’s going to be a little longer... This time I’m going to use Python to build a simple proxy pool. Get the proxy IP and verify its validity. However, the result does not seem to be very ideal. Why can the high-altitude proxy of West Spurs be used? ? ? Doesn’t it mean that free agents are not easy to use? It’s really a black man’s question mark face...

Build a simple proxy pool using Python

##NO.1 Agent Get

01 Web page analysis

Get web page information by clicking on the domestic high-hidden agent of Xisha Agent.

Get the IP address, port, anonymous or not, type, speed.

Build a simple proxy pool using Python

02 Get proxy information

Remember to set the random selection headers and sleep time, because I didn’t set it, and then I was blocked.. .

Build a simple proxy pool using Python

import time
import requests
from bs4 import BeautifulSoup
headers = {
    &#39;User-Agent&#39;: &#39;Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36&#39;
}
for i in range(1, 36):
    time.sleep(2)
    print(&#39;第&#39; + str(i) + &#39;页&#39;)
    url = &#39;http://www.xicidaili.com/nn/&#39; + str(i)
    response = requests.get(url=url, headers=headers)
    soup = BeautifulSoup(response.text, &#39;html.parser&#39;)
    all_trs = soup.find_all(&#39;tr&#39;)
    for tr in all_trs[1:]:
        all_tds = tr.find_all(&#39;td&#39;)
        ip = all_tds[1].get_text()
        port = all_tds[2].get_text()
        anonymous = all_tds[4].get_text()
        type = all_tds[5].get_text()
        for j in all_tds[6].find_all("div", attrs={"class": "bar"}):
            speed = j.get(&#39;title&#39;)
        with open(&#39;ip.csv&#39;, &#39;a+&#39;, encoding=&#39;utf-8-sig&#39;) as f:
            f.write(ip + &#39;,&#39; + port + &#39;,&#39; + anonymous + &#39;,&#39; + type + &#39;,&#39; + speed + &#39;\n&#39;)

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Build a simple proxy pool using Python

Randomly obtain the code of the user agent. The following function is not added above (the result is blocked, but the second It works again)

def get_user_agent():
    &#39;&#39;&#39;
    随机获取一个用户代理
    &#39;&#39;&#39;
    user_agents=[
        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
        "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)",
        "Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.5; AOLBuild 4337.35; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
        "Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)",
        "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)",
        "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)",
        "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)",
        "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/523.15 (KHTML, like Gecko, Safari/419.3) Arora/0.3 (Change: 287 c9dfb30)",
        "Mozilla/5.0 (X11; U; Linux; en-US) AppleWebKit/527+ (KHTML, like Gecko, Safari/419.3) Arora/0.6",
        "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2pre) Gecko/20070215 K-Ninja/2.1.1",
        "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0",
        "Mozilla/5.0 (X11; Linux i686; U;) Gecko/20070322 Kazehakase/0.4.5",
        "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.8) Gecko Fedora/1.9.0.8-1.fc10 Kazehakase/0.5.6",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11",
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.20 (KHTML, like Gecko) Chrome/19.0.1036.7 Safari/535.20",
        "Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.11 TaoBrowser/2.0 Safari/536.11",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.71 Safari/537.1 LBBROWSER",
        "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; LBBROWSER)",
        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E; LBBROWSER)",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.84 Safari/535.11 LBBROWSER",
        "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)",
        "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; QQBrowser/7.0.3698.400)",
        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E)",
        "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SV1; QQDownload 732; .NET4.0C; .NET4.0E; 360SE)",
        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E)",
        "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)",
        "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1",
        "Mozilla/5.0 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5",
        "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:2.0b13pre) Gecko/20110307 Firefox/4.0b13pre",
        "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11",
        "Mozilla/5.0 (X11; U; Linux x86_64; zh-CN; rv:1.9.2.10) Gecko/20100922 Ubuntu/10.10 (maverick) Firefox/3.6.10"
    ]
    # random.choice返回列表的随机项
    user_agent = random.choice(user_agents)
    return user_agent

# random.randint产生随机整数
time.sleep(2 + float(random.randint(1, 100)) / 20)

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NO.2 Agent verification

Through verification, I found that most of them can be used, but I don’t know whether they are true or false.

The website uses the website that previously recognized the verification code, such as Yunge Novel Network.

Only 2 out of 200 are invalid, unscientific~

import pandas as pd
import numpy as np
import requests
import time

df = pd.read_csv(&#39;ip.csv&#39;, header=None, names=["ip", "port", "anonymous", "proxy_type", "speed"])

proxy_types = ["{}".format(i) for i in np.array(df[&#39;proxy_type&#39;])]
ips = ["{}".format(i) for i in np.array(df[&#39;ip&#39;])]
ports = ["{}".format(i) for i in np.array(df[&#39;port&#39;])]

proxy_url = [&#39;{0}://{1}:{2}&#39;.format(proxy_types[i], ips[i], ports[i]) for i in range(len(ips))]

proxy_type = [&#39;{}&#39;.format(i) for i in proxy_types]
for i in range(200):
    time.sleep(1)
    proxies = {
        proxy_type[i]: proxy_url[i]
    }
    try:
        response = requests.get(&#39;http://www.quanben9.com/&#39;, proxies=proxies)
    except Exception as e:
        print(&#39;invalid ip and port&#39;)
    else:
        code = response.status_code
        if code == 200:
            print(&#39;effective ip&#39;)
            with open(&#39;effective_ip.csv&#39;, &#39;a+&#39;, encoding=&#39;utf-8-sig&#39;) as f:
                f.write(proxy_type[i] + &#39;,&#39; + proxy_url[i] + &#39;\n&#39;)
        else:
            print(&#39;invalid ip and port&#39;)

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NO.3 Summary

IP protocol: Internet Protocol, its function is to combine various The data packet is transmitted to the other party (two important conditions, IP address and MAC address).

IP address: Indicates the address assigned to the node.

Port: Ports are marked by port numbers. Port numbers are only integers, ranging from 0 to 65535. There are 65536 ports for an IP address. "IP address port number" distinguishes different services (Web, FTP, SMTP).

HTTP: Hypertext Transfer Protocol, completes a series of operational processes from client to server.

HTTPS: HTTP with encryption and authentication mechanisms added.

To be honest, I didn’t know anything about IP addresses, ports, HTTP, and HTTPS before.

I’ve been reading Illustrated HTTP recently, and I have some understanding of them, but it’s only a little bit, and there’s still a long way to go.

However, Rome was not built in a day, and progress is a good thing!

[Recommended course:

Python column course]

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