Python requests using proxies: Anti-blocking configuration

When crawlers meet IP blocking, try these life-saving actions

Engage in crawling old iron should understand that the website anti-climbing mechanism is getting more and more ruthless. Sometimes just run two minutes, the IP will be blacked out. At this time the proxy IP is your life-sustaining magic weapon, today hand in hand to teach you how to use requests library to play around with the proxy configuration.

Why are proxy IPs a life saver?

In a nutshell.lit. the cicada sheds its carapace (idiom); fig. vanish leaving an empty shell. When the site blocked your current IP, through the proxy IP to switch to a new identity to continue to visit. It's like playing a game where you get banned and switch to a smaller number, but be careful not to use an inferior proxy, or else it's like opening up and getting blocked even faster.

Requests Basic Proxy Configuration

Getting straight to the hard stuff, the most basic proxy configuration looks like this:

import requests

proxies = {
    'http': 'http://用户名:密码@ipipgo proxies:port',
    'https': 'http://用户名:密码@ipipgo proxy:port'
}

response = requests.get('destination URL', proxies=proxies)

Note that this is replaced withipipgoThe real proxy information provided. Many people fall victim to formatting errors, especially if the password contains special symbols remember to use urllib.parse.quote to handle them.

Dynamic IP pools are the way to go

Repeated use of a single IP is tantamount to looking for death, here are the recommendationsipipgo's dynamic IP pooling service.. Their API gets the latest agents in real time, paired with this code template:

from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry

 Get the dynamic proxy for ipipgo
def get_ipipgo_proxy():
    api_url = "https://api.ipipgo.com/getproxy"
    return requests.get(api_url).json()['proxy']

session = requests.Session()
retries = Retry(total=5, backoff_factor=1)
session.mount('http://', HTTPAdapter(max_retries=retries))

for _ in range(10).
    Try.
        proxy = get_ipipgo_proxy()
        response = session.get('destination URL', proxies={'http': proxy}, timeout=10)
        print("Successful request:", response.status_code)
        print("Successful request:", response.status_code)
    except Exception as e.
        print("Request failed, switching IPs automatically...")

This template does three big things: auto-retry, timeout control, and exception handling. With ipipgo's rotating IP pool, the success rate can be increased by more than 80%.

Anti-blocking Practice Tips

It's not enough to have an agent, these are the details to keep in mind:

QA First Aid Kit

Q: How many times will the proxy IP be invalidated?
A: This situation is eighty percent of the use of low-quality proxy, it is recommended to change into ipipgoExclusive High Stash Agent, each of their IPs has a survival time guarantee.

Q: Obviously I used a proxy and still got blocked?
A: Check if the local IP is not turned off! Add this parameter in the requests:proxies={'http': proxy, 'https': proxy}, verify=False(for development environments, certificates are recommended for production environments)

Q: How to solve the problem of slow agent speed?
A: ipipgo has specializedHigh-speed server room linesIf you want to use a node that corresponds to your region, you should choose Beijing or Shanghai nodes. For example, if you climb a domestic website, you can choose Beijing or Shanghai server room, and the latency can be controlled within 200ms.

Final Recommendations

Proxy IP is not a panacea, it has to work withcamouflage strategyThe use of. It's like playing chicken, it's not enough to just change your clothes, you have to pay attention to positioning and marksmanship. ipipgo's proxy stability can really hit it, but the specific configuration parameters have to be flexibly adjusted according to the target site. Encountering difficult anti-climbing, you can try theirCustomized agency solutions, technical customer service response is a thief.