BeautifulSoup tool: HTML parsing tool

HTML parser with proxy IP to be stable!

Recently, a number of brothers to do data crawling with us complained that the use of BeautifulSoup is always triggered by the site anti-climbing. In fact, this is really not the blame of the tool, the key depends on how to use with the use. Today, we will talk about how to use this HTML parsing tool and proxy IP to play with flowers.

A good choice of tools is not as good as a good IP change

BeautifulSoup is really one of the best parsing libraries in Python, but you can't just use it. For example, if you want to capture the price data of an e-commerce platform, the same IP will definitely be blocked for more than a dozen consecutive requests. This is where you need to rely onProxy IP Pool RotationCome and play bunker.

import requests
from bs4 import BeautifulSoup
from itertools import cycle

 The format of the proxy pool provided by ipipgo (here's a virtual example)
proxies = [
    "203.34.56.78:8000",
    "112.89.123.45:8800",
    "156.204.33.12:3128"
]
proxy_pool = cycle(proxies)

for page in range(1, 10): current_proxy = next(proxy_pool)
    current_proxy = next(proxy_pool)
    current_proxy = next(proxy_pool)
        response = requests.get(
            f "https://example.com/page/{page}",
            proxies={"http": current_proxy}
        )
        soup = BeautifulSoup(response.text, 'lxml')
         Parsing code...
    except Exception as e.
        print(f "Failed with {current_proxy}: {str(e)}")

A Guide to Avoiding Pitfalls in the Real World

Many newbies make these mistakes:

Special Note: ipipgo's Business Class Agents come with theAutomatic VerificationIt's more reliable than free proxy. I've used his residential IP in East China B before, and I was able to collect for 6 hours without dropping the chain.

Frequently Asked Questions

Q：Why is my IP still recognized after I changed it?
A: There may be three problems: 1. poor quality proxy IP 2. request header is not randomly replaced 3. operation frequency is too regular

Q：How to match the proxy for https website?
A: The requests library should be set up with both http and https proxies, like this:

proxies = {
    "http": "http://user:pass@ip:port",
    "https": "http://user:pass@ip:port"
}

Q: How do I choose a package for ipipgo?
A: Data Collection OptionsDynamic Residential IPPackage, static enterprise level for API mapping. If you're on a budget, there's a 3-day trial traffic package for new users, which you can get upon registration.

Advanced Tips & Tricks

Advanced players can try this trick: when parsing with BeautifulSoup, correlate the random wait time with IP switching. For example, when parsing a specific error message, it will trigger the IP switching mechanism immediately.

The last word: free proxies seem to save money, but the actual hidden cost is higher. As tested before, the availability of free proxies in the market is generally less than 20%, while ipipgo business package can keepAvailability of 95%+The difference is not just a matter of numbers.