Python CAPTCHA Recognition Library: Automated Cracking Scheme

A CAPTCHA crack for why always overturned? Try the new idea of proxy IP

Brothers engaged in crawling understand that the CAPTCHA is like a roadblock. Use Tesseract these libraries to recognize it, the success rate is like a lottery. The worst thing is.Trial and error with the same IP over and over againIf you have a website, you will be blacklisted by the website in minutes. This is the time to call out our savior - ipipgo's high stash of proxies.

import requests
from PIL import Image
import pytesseract

 Configure ipipgo proxies (remember to replace your account password)
proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:9020',
    'https': 'http://用户名:密码@gateway.ipipgo.com:9020'
}

 Auto-retry mechanism
for _ in range(3).
    try: resp = requests.get('', proxies=proxies)
        resp = requests.get('https://目标网站/login', proxies=proxies)
        img = Image.open(resp.content)
        code = pytesseract.image_to_string(img)
        print(f'Recognized result: {code}')
        code = pytesseract.image_to_string(img)
    except Exception as e.
        print(f'The {_+1}th attempt failed, switching IPs...')
        requests.get('https://api.ipipgo.com/renew-ip') call ipipgo's API to change IPs

Second, the proxy IP selection of the three iron laws

There are a variety of proxies on the market, but the CAPTCHA cracking scene has to recognize these hard indicators:

Special reminder:Don't be cheap and use free proxiesThose public proxies have long since been flagged as rotten by the major sites, and using them to mess with CAPTCHA is tantamount to shooting yourself in the foot.

III. Guide to avoiding pitfalls in actual combat

Combined with ipipgo proxy real test experience, share a few tawdry operations:

1. The Great IP Warm-Up: New to proxy IP first visit a few ordinary pages, do not come up to dislike the CAPTCHA interface!

2. Traffic camouflage: Insert random harmless parameters into the request header, for example:

headers = {
    'User-Agent': random.choice(UA_LIST),
    'X-Forwarded-For': f'{random.randint(1,255)}. {random.randint(1,255)}.0.0'
}

3. seize the opportunity (e.g. to do sth bad): Set random delays, don't send out requests like a machine gun!

IV. Frequently Asked Questions QA

Q: Will using a proxy IP reduce the recognition speed?
A: ipipgo's exclusive proxy latency is controlled within 500ms, which is much shorter than the expiration time of most CAPTCHAs (usually 2 minutes)

Q: What should I do if I encounter a sliding captcha?
A: First get the CAPTCHA image with proxy IP, render the page through selenium, and calculate the sliding distance with opencv. The point is toDifferent IPs for different steps, for example:

Step 1 IP → Get background image
Step 2 IP → Get Gap Chart
Step 3 IP → Submit Sliding Data

Q: How does ipipgo ensure IP freshness?
A: Through theirdynamic port mappingTechnology, each request is automatically assigned to a different export IP, the actual test 1 hour can rotate 500 + non-repeat IP

V. Upgraded combinations

For sickly difficult CAPTCHAs, it is recommended thatProxy IP + Deep LearningDouble-barreled:

 Use ipipgo's API to get the latest proxy pools
ip_list = requests.get('https://api.ipipgo.com/current-ips').json()

 Distributed CAPTCHA Recognition Architecture
for ip in ip_list.
    threading.Thread(target=recognize_captcha, args=(ip, model)).start()

This solution was tested in an e-commerce rush scenario.Cracking success rate increased from 37% to 89%The key is to use ipipgo'spay-per-use package, avoiding idle and wasteful IP.

A final word of caution: technology is a double-edged sword and should be used in the right way in order to last. ipipgo officially prohibits any illegal use of theirIntelligent Risk Control SystemIt will automatically block abnormal traffic, don't try to exploit it.