Detailed method to find BeautifulSoup class using proxy IPs

Teach you to use proxy IP to play around with web crawling

Recently, many partners asked Lao Zhang, using Python to do data collection always hit a wall how to do? Today, we will share with you a trick - using proxy IP with BeautifulSoup to do web parsing. This method is especially suitable for those who need to collect data in a long-term and stable manner, and the key can also avoid being blacked out by the target website.

Don't get sloppy with the basics.

Let's get a few core things straight:

 Required library installation (don't bother)
pip install requests beautifulsoup4

Highlight it three times:
1. The requests library is responsible for network requests
2. BeautifulSoup to do page parsing
3. Proxy IP is your invisibility cloak.

Proxy IP how to pretend to be authentic

Here to take ipipgo home proxy example (his dynamic IP pool is really stable), configuration, pay attention to the format don't whole fork split:

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

response = requests.get(url, proxies=proxies, timeout=10)

A common pitfall for newbies:

The Three Axes of Counter-Climbing

It's not enough to have an agent, you have to learn the combinations:

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) turnip knife/2023'
}

1. Randomly change the UA header for each request (don't use the default python-requests)
2. Intervals between visits are limited to 3-5 seconds (no rush)
3. ipipgo's high stash proxy remember to turn on HTTPS mode

Data Capture Practical Tips

Take a real life example of capturing e-commerce price data:

soup = BeautifulSoup(response.text, 'lxml')
price_tags = soup.select('div.price-box span[class="final"]')
for tag in price_tags.
    print(tag.text.strip())

When it comes to dynamically loaded data, remember to use it with Selenium+proxy. This is when ipipgo's pay-as-you-go package is particularly cost-effective and won't waste resources.

Frequently Asked Questions First Aid Kit

Q: What should I do if the proxy suddenly fails?
A: Immediately switch the alternate IP, it is recommended to use ipipgo's automatic rotation function, his family API support second switching

Q: How do I break the CAPTCHA when I encounter it?
A: 1. reduce the collection frequency 2. use ipipgo's residential agent 3. on the coding platform when necessary

Q: How can I tell if a proxy is in effect?
A: Visit http://httpbin.org/ip to see if the returned IP changes

The doorway to choosing a proxy service

There are all kinds of agent services on the market, but Lao Zhang real test down or ipipgo reliable. His family has three killer features:

1. Exclusive IP quality monitoring system (automatic filtering of failed nodes)
2. Support for hourly billing (suitable for short-term projects)
3. 7×24 technical customer service (you can find someone in the middle of the night if you have a problem)

Lastly, data collection should be done in an appropriate manner. Don't paralyze other people's websites. Reasonable use of proxy IPs is not only a technical task, but also an art. When you encounter problems, take a look at ipipgo's documentation, which has a lot of hidden tricks.