BeautifulSoup Documentation Library: The Official Parsing Guide

When the crawler meets BeautifulSoup: the right way to open the proxy IP

When you use Python to do data crawling, it is estimated that you have encountered the situation of website anti-crawling. Although BeautifulSoup can parse the web page, but there is no reliable proxy IP pool to support, the target site will be black in minutes. Today let's talk about how to make proxy IP and BS4 this pair of good friends with work.

Why proxy IPs are a must for crawlers?

To give a real example: last month there is a brother to do e-commerce price comparison, single BS4 to catch the price data of a platform, the results just run two days IP was blocked. Later to the scriptWith a dynamic proxy IP poolThe survival time is directly increased by a factor of 20. Here's the kicker:Fixed IPs are like living targets, rotating IPs is the way to goThe

import requests
from bs4 import BeautifulSoup

proxies = {
  'http': 'http://user:pass@proxy.ipipgo.com:30001',
  'https': 'http://user:pass@proxy.ipipgo.com:30002'
}

response = requests.get('https://target.com', proxies=proxies)
soup = BeautifulSoup(response.text, 'html.parser')
 Here's where you start your parsing operation...

A practical guide to avoiding the pit

A pitfall that many newbies tend to fall into isProxy validation is not done properly.. Remember to add a check link in the code, like this:

def check_proxy(proxy).
    try.
        test_url = "http://httpbin.org/ip"
        resp = requests.get(test_url, proxies=proxy, timeout=10)
        return True if resp.status_code == 200 else False
    return False if resp.status_code == 200 else False
        return False

Here's a little trick: use the ipipgo-suppliedLong-lasting static IPBeing a verified node is much more stable than using free IPs. Their exclusive IP pool success rate can go up to 99%, which is tested to be more reliable than the shared pool.

How do you choose a proxy type without stepping on the line?

Frequently Asked Questions

Q: What should I do if my proxy IP often times out?
A: Eighty percent of the use of poor-quality agents, change ipipgo enterprise-class line to try. They have a smart routing feature that automatically avoids congested nodes.

Q: What if I need to deal with CAPTCHA?
A: with ipipgo'sHigh Stash IPUse it to reduce the probability of being recognized. The probability of triggering CAPTCHA with a high stash of IP can be reduced by 60% in the same business scenario.

Q: Why do you recommend ipipgo?
A: their own project measured data: continuous capture of an e-commerce platform for 30 days, with the ordinary agent was blocked 47 times, change ip ipgo only triggered 2 times to verify. Their home IP pool hasReal user traffic mixingcharacteristics that are more difficult to recognize than pure server room IPs.

Say something from the heart.

If you are in the crawler business, don't save money on proxy IPs. I have seen a team to save money to use a free proxy, the results of the project on the line in a week was blocked more than 200 IP, and finally delayed the progress of the loss. Like ipipgo professional service providers, every day to provideTens of millions of IP resourcesThe cost of a single request is only a few cents, which is the proper way to run a project.