BeautifulSoup: A Hands-on Guide to Getting Started with Python's Web Parsing Library

How proxy IPs can help you elegantly break the ice when crawlers encounter counter-crawling?

Do crawl the old driver know, BeautifulSoup although parsing web page 666, but directly hard target site is easy to eat the door. At this time you need to proxy IP to act as a middleman, to help you spread the request to different IP addresses. Like going to the bank to do business, every time you send a different person to the window queue, the teller naturally do not notice the anomaly.

Here's to the homegrown productsipipgo proxy serviceWe specialize in preparing dynamic IP pools for crawler engineers. For example, an e-commerce site is limited to 50 visits per hour by a single IP, with ipipgo's rotating IP function, it automatically switches between different export IPs, perfectly avoiding the access frequency limit.

Hands-on with proxy IP + BeautifulSoup to mess with data

Prepare these two artifacts first:

1. Installation of essential libraries

pip install beautifulsoup4 requests

2. Configure the proxy IP

The actual code snippet (remember to replace it with your own account):

proxies = {
    'http': 'http://user123:pass456@api.ipipgo.com:8000',
    'https': 'http://user123:pass456@api.ipipgo.com:8000'
}
response = requests.get(url, proxies=proxies, timeout=10)
soup = BeautifulSoup(response.text, 'html.parser')

3 Pitfalls Newbies Often Step In

① Inappropriate timeout settings: It is recommended to set the timeout according to the response speed document of ipipgo, the average delay of the measured East China node is about 200ms.

② User-Agent is too fake: The anti-crawl system recognizes the default UA of requests, and it is recommended to randomly generate it with the fake_useragent library.

③ Forget about exception handling: Proxy IPs occasionally fail, remember to wrap the request code with try-except and automatically retry when you encounter a 407 error.

Soul Torture QA Session

Q: What should I do if the proxy IP is invalid after using it?
A: This is the reason for recommending ipipgo, our intelligent scheduling system will automatically replace the IP before it is blocked, and the API interface supports real-time access to the latest available IP.

Q: What should I do if I can't get up the collection speed?
A: Try ipipgo's concurrency package, with multi-threaded crawlers, measured up to 500 requests / sec. Pay attention to set a reasonable delay, don't make people's websites hang up.

Q: How can I tell if the proxy IP is high stash?
A: Use httpbin.org/ip to check, if the returned origin is proxy IP instead of real IP, it means the high anonymity mode of ipipgo is effective.

Why do professional crawlers choose ipipgo?

The real-world comparison data speaks for itself:

Finally, a nagging word: although the proxy IP is good, do not be greedy Oh! Comply with the website robots agreement, control the frequency of requests, we have to be ethical crawler engineers. Encountered complex anti-climbing strategy, may wish to try ipipgo customized solutions, technical customer service 7 × 24 hours online tips.