Python CAPTCHA Recognition: Python Proxy CAPTCHA Recognition

When the crawler meets the CAPTCHA, proxy IP can help what?

Crawler old iron understand, CAPTCHA is like a security guard in front of the house, specializing in stopping us these "visitors". Ordinary practice is to use OCR technology hard just, but the site is not vegetarian, found abnormal access immediately block IP.proxy IPIt's your cloak of invisibility, especially like theipipgoThis dynamic IP pooling allows you to make your requests as natural as if they were accessed by different users.

import requests
from PIL import Image
import pytesseract

 Example of proxy configuration with ipipgo
proxies = {
    'http': 'http://username:password@gateway.ipipgo.com:9020',
    'https': 'http://username:password@gateway.ipipgo.com:9020'
}

 Download CAPTCHA with proxies
response = requests.get('https://example.com/captcha', proxies=proxies)
with open('captcha.jpg', 'wb') as f.
    f.write(response.content)

 Simple Recognition Example
image = Image.open('captcha.jpg')
text = pytesseract.image_to_string(image)
print(f'Recognition result: {text}')

Proxy IP Selection with Care

There are various types of proxies on the market, and you have to use the right model for CAPTCHA recognition. Recommendedipipgo's high stash of dynamic residential IPsWhy? Look at this comparison table:

A practical guide to avoiding the pit

I've seen people use free proxies to engage in CAPTCHA recognition, the result of half an hour was blocked more than a dozen IP. here to teach you a fewlife-saving technique::

1. Change to a different IP per request (ipipgo's API supports per-request changes)
2. Control the frequency of requests, don't just blast away like a pile driver.
3. When encountering complex CAPTCHA, first save it locally, do not try it on the server.

How do I break the CAPTCHA upgrade?

Sliding puzzles and tapping icons are becoming more and more common these days. Don't panic, use this combo:
- ipipgo'sexclusive IPMaintaining a stable session
- OpenCV to do image feature matching
- Selenium simulates live action
Remember to add random delays between key steps so that the site doesn't see mechanical actions.

Frequently Asked Questions QA

Q: What should I do if the recognition speed slows down after using a proxy IP?
A: Go with ipipgo'sHigh-speed server room linesResponse speed can be controlled within 200ms.

Q: What should I do if I always encounter a mixed graphic CAPTCHA?
A: First, use the image segmentation algorithm to split the text and interference lines, and then use the CNN model to train separately. At this time remember to pair with ipipgo'sLong-lasting static IPTo avoid frequent IP changes that can lead to feature learning failures

Q: What if I need multi-threaded batch processing?
A: It is recommended to use ipipgo'sMulti-Channel Concurrent PackageIf you want to use a separate IP for each thread, don't use the same IP to open multiple threads and get killed.

One last rant, don't waste your time tossing around free proxies. Leave the professional stuff to the professional tools.ipipgoNew users get 5G of free traffic, enough to test CAPTCHA recognition a few thousand times. You have to calculate the cost of time to engage in technology, and you might as well get more sleep if you have that kind of effort to toss around.