Python automation with Selenium for downloading dynamic captchas

Question

Python automation with Selenium for downloading dynamic captchas

With a large number of registration numbers to check regularly, I decided to develop a script that could automate this process for me.

The process involves visiting the website:

On this website, I need to enter a registration number in one field and solve a captcha in another. While solving the captcha is straightforward with existing Python libraries, the challenge lies in saving the image from the dynamic URL specified in the "src" attribute.

My current approach to this issue involves using web scraping techniques, as shown below:

from captcha_solver import CaptchaSolver
from selenium import webdriver
import time

driver = webdriver.Chrome()
driver.get("https://www.anaf.ro/inactivi/index.jsp")

time.sleep(5)

elem = driver.find_element_by_name('inputCui')  # Locate the first input box
elem.send_keys('17741254')   # Enter the desired code

If anyone has alternative suggestions or ideas on how I can tackle this problem more effectively, I am open to hearing them.

python python-3.x selenium

Answer 1

Answer №1

After some trial and error, I finally cracked it! My method involves capturing a screenshot of the page, cropping it to isolate the captcha, and then decoding it. For those curious minds, here is the script I used:

def capture_captcha(driver, element, path):
    location = element.location
    size = element.size
    driver.save_screenshot(path)
    image = Image.open(path)
    left = location['x']
    top = location['y']
    right = location['x'] + size['width']
    bottom = location['y'] + size['height']
    image = image.crop((left, top, right, bottom))
    image.save(path, 'png')

img = driver.find_element_by_xpath("//img[1]")
capture_captcha(driver, img, "captcha.png")

Answer 2

After some trial and error, I finally cracked it! My method involves capturing a screenshot of the page, cropping it to isolate the captcha, and then decoding it. For those curious minds, here is the script I used:

def capture_captcha(driver, element, path):
    location = element.location
    size = element.size
    driver.save_screenshot(path)
    image = Image.open(path)
    left = location['x']
    top = location['y']
    right = location['x'] + size['width']
    bottom = location['y'] + size['height']
    image = image.crop((left, top, right, bottom))
    image.save(path, 'png')

img = driver.find_element_by_xpath("//img[1]")
capture_captcha(driver, img, "captcha.png")

Python automation with Selenium for downloading dynamic captchas

Answer №1

Similar questions

What is the reason behind receiving the alert message "Received 'WebElement' instead of 'collections.Iterable' as expected" at times?

Automated Ebay Script using Selenium

Create a custom Python graphical user interface that integrates a button for executing a command in the terminal

Wrapper for establishing database connections

Java Selenium - accessing hidden input values

Python Code for Image Upload

Is there a way to verify if data is present in stdin?

Using Selenium to access and read a PDF document that opens in a new tab, without the need for

Retrieving and saving images from Azure Blob Storage

Deploying PhantomJS on Heroku

Extracting Data from Imgur Videos: Measuring their Duration

Can you find a solution using the GUI interface?

When Selenium is not in headless mode, it cannot capture a screenshot of the entire website

Is there a method to receive a report on each replacement made by re.sub function?

Tips for converting the 'numericals' in the input provided by the user into the initial point of a loop

Unable to locate element in the DOM using XPath

Selenium is having trouble locating the specified tag

Locating and Exiting a Popup Box in Firefox with Selenium and C#

Python encountering errors while attempting to load JSON file

Error encountered: Unknown error while using Microsoft Edge WebDriver