Beautiful Soup parsing: BeautifulSoup proxy parsing

When the crawler meets the CAPTCHA: with proxy ip to the program to wear a vest

Do data collection of friends understand, the most afraid of the site suddenly popping CAPTCHA. Two days ago to help customers catch the price of an e-commerce platform, just run for half an hour on the blocked IP, so angry that I almost fell on the keyboard. At this time you have to give the crawler set of a proxy ip, like a mask for people to participate in the masquerade, the site does not recognize the real body nature does not stop you.

To give a real case: a company needs to monitor the price of competing products, with ipipgo's dynamic residential agent, automatically replacing the IP address every 5 minutes. Originally, it was blocked a dozen times a day, and now it runs continuously for a week with no problem. This is the core value of the proxy ip-Let the program masquerade as being accessed by different usersThe

BeautifulSoup with proxies: two swords together in practice

Here to share a practical script, using requests + proxy + BeautifulSoup three-piece set. Focus on the proxy settings section:

import requests
from bs4 import BeautifulSoup

proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.net:端口',
    'https': 'http://用户名:密码@gateway.ipipgo.net:端口'
}

try.
    resp = requests.get('destination URL', proxies=proxies, timeout=10)
    soup = BeautifulSoup(resp.text, 'lxml')
     Here's the parsing logic...
except Exception as e.
    print(f "Crawl error: {str(e)}")

Note the three pit stops:

1. Do not set the timeout to exceed 15 secondsRecommended 8-12 seconds
2. Be specific about exception catchingDon't just write a pass.
3. Switching IP frequenciesAccording to the strength of the target site backcrawl

ipipgo real-world selection guide

Choosing an agent type is like choosing a car transmission:

I recently found out they have aCold but useful features: On the client side can directly generate a chain of agents to string together multiple agents , especially suitable for the need for multi-layer jump scenarios .

Frequently Asked Questions First Aid Kit

Q: What should I do if my proxy IP suddenly fails?
A: First check the account balance, and then try to replace the terminal equipment network environment. If the anomaly persists, contact ipipgo customer service response speed is very fast, measured within 3 minutes must reply.

Q: How to improve the efficiency of data collection?
A: three tricks: ① use asynchronous request library ② reasonable set of concurrency (recommended 5-10 threads) ③ with ipipgo's API dynamic access to IP pools

Q: What should I do if I encounter Cloudflare protection?
A: This situation needs to be on their TK line agent, with the modification of the browser fingerprint parameters. However, the specific operation depends on the level of protection of the site, it is recommended to apply for a test IP to try the water.

lit. experience of avoiding a pitfall (idiom); experience in avoiding pitfalls

Last year with a proxy service, claiming millions of IP pools, the result is that 6 out of 10 can not connect. Later change ip ipgo realized that the proxy service provider of the water is deeper than imagined:

- Don't just look at the number of IPs, depends on availability (recommend requesting a test)
- Pay attention to how the flow is calculatedSome will count two-way traffic.
- Beware of low price trapsThe 9.9 monthly subscription is definitely a problem!

And finally.Hidden TipsThe following is a list of the most common types of IPs used by the crawlers: randomly set User-Agent in the crawlers with different regional proxy IPs to use, directly doubling the effect of anti-blocking. ipipgo background can be filtered directly by country and city IP, this feature is particularly fragrant when doing overseas data collection.