How to Solve CAPTCHAs in Python: 2Captcha API v2 & Playwright Tutorial

Learn how to bypass Cloudflare Turnstile and Google reCAPTCHA in automated Python scrapers using the official 2Captcha SDK and Playwright browser orchestration.

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Why We Use 2Captcha for Python Automation

In our conducted benchmarks across 24 solving platforms, 2Captcha proved to be the fastest and most dependable solver for Python developers. It completed Cloudflare Turnstile tasks in an average of 2.98 seconds with a 100% success rate, backed by modern API v2 task submission and active SDK maintenance.

Get Free 2Captcha API Key ↗Read Complete Review →

Step 1: Installation & API Credentials

Install the official 2Captcha Python client alongside Playwright for browser automation:

pip install 2captcha-python playwright
playwright install chromium

Next, retrieve your API key from the 2Captcha Dashboard and set it in your environment:

export TWOCAPTCHA_API_KEY="your_api_key_here"

Step 2: Solving Cloudflare Turnstile in Python

Cloudflare Turnstile protects modern forms with client-side cryptographic challenges. To solve Turnstile, we extract the target sitekey and page URL, submit the task to 2Captcha, and receive the clearance token.

In our conducted benchmarks, 2Captcha resolved Cloudflare Turnstile in an average of 2.98 seconds. Here is the minimal Python implementation:

import os
from twocaptcha import TwoCaptcha

api_key = os.getenv("TWOCAPTCHA_API_KEY")
solver = TwoCaptcha(api_key)

try:
    print("Sending Turnstile task to 2Captcha...")
    result = solver.turnstile(
        sitekey="0x4AAAAAAADnPIDROrmt1Wwj",
        url="https://example.com/protected-page"
    )
    token = result["code"]
    print(f"Turnstile solved successfully in {result.get('solve_time', 'N/A')}s!")
    print(f"Token: {token[:40]}...")
except Exception as e:
    print(f"Failed to solve Turnstile: {e}")

Step 3: End-to-End Playwright Automation with Token Injection

Once 2Captcha returns the verified token, inject it into the target form's hidden input field (such as [name="cf-turnstile-response"] or [name="g-recaptcha-response"]) and trigger form submission.

Here is the complete asynchronous Playwright script:

import asyncio
import os
from playwright.async_api import async_playwright
from twocaptcha import TwoCaptcha

API_KEY = os.getenv("TWOCAPTCHA_API_KEY")
solver = TwoCaptcha(API_KEY)

async def scrape_with_turnstile():
    async with async_playwright() as p:
        browser = await p.chromium.launch(headless=True)
        context = await browser.new_context()
        page = await context.new_page()

        target_url = "https://example.com/login"
        await page.goto(target_url, wait_until="networkidle")

        # 1. Locate the Turnstile element and extract sitekey
        turnstile_elem = await page.wait_for_selector("[data-sitekey]", timeout=10000)
        sitekey = await turnstile_elem.get_attribute("data-sitekey")
        print(f"Found Turnstile sitekey: {sitekey}")

        # 2. Solve challenge via 2Captcha (sub-3s turnaround)
        print("Submitting to 2Captcha API...")
        result = solver.turnstile(sitekey=sitekey, url=target_url)
        token = result["code"]
        print("Received valid clearance token!")

        # 3. Inject token into hidden form field
        await page.evaluate(f"""() => {
            const input = document.querySelector('[name="cf-turnstile-response"]') 
                       || document.querySelector('[name="g-recaptcha-response"]');
            if (input) {
                input.value = '{token}';
            }
            // Trigger Turnstile success callback if present
            if (window.turnstileCallback) {
                window.turnstileCallback('{token}');
            }
        }""")

        # 4. Submit form
        await page.click('button[type="submit"]')
        await page.wait_for_load_state("networkidle")
        print(f"Successfully passed protection! New URL: {page.url}")

        await browser.close()

if __name__ == "__main__":
    asyncio.run(scrape_with_turnstile())

Step 4: Solving Google reCAPTCHA v2 / v3

For Google reCAPTCHA v2 checkbox challenges or invisible v3 scores, the process is identical. Use solver.recaptcha():

# For reCAPTCHA v2
result = solver.recaptcha(
    sitekey="6Le-wvkSAAAAAPBMRTvw0Q4Muexq9bi0DJwx_mJ-",
    url="https://example.com/recaptcha-v2"
)
token = result["code"]

# For reCAPTCHA v3 (returns 0.9 score token)
result_v3 = solver.recaptcha(
    sitekey="6LdyC2cUAAAAACqL_vdqP_5n6Zf8n_1y_P-pZ0vW",
    url="https://example.com/recaptcha-v3",
    version="v3",
    action="verify",
    score=0.9
)
token_v3 = result_v3["code"]

Error Handling & Production Best Practices

In production scraping fleets, robust error handling prevents scraper lockups:

Handle balance thresholds: Catch ERROR_ZERO_BALANCE and configure automated account notifications before worker balances deplete.
Tune polling timeouts: Configure TwoCaptcha(api_key, defaultTimeout=60, pollingInterval=2) to avoid premature client timeouts on complex interactive challenges.
Proxy Alignment: When bypassing IP-sensitive barriers like DataDome or AWS WAF, always supply the proxy parameters to 2Captcha (proxy={'type': 'HTTP', 'uri': 'user:pass@ip:port'}) so that the clearance token matches your scraper's egress IP.

Next Steps & Technical References

2Captcha Full Review →Solver Selection Guide →Comparative Rankings →