Added Playwright-based scraper solution to community-contributions
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lakovicb
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community-contributions/playwright-bojan/README.md
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community-contributions/playwright-bojan/README.md
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# 🧠 Playwright-Based Web Scraper for openai.com
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### 📚 Community Contribution for Ed Donner's "LLM Engineering: Master AI" Course
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> _“An extra exercise for those who enjoy web scraping...
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> In the community-contributions folder, you'll find an example Selenium solution from a student.”_
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---
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## 🔍 About This Project
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This is a response to Ed Donner’s bonus exercise to scrape `https://openai.com`, which uses dynamic JavaScript rendering.
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A fellow student contributed a Selenium-based solution — this one goes a step further with **Playwright**.
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---
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## 🆚 Why Playwright Over Selenium?
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| Feature | Selenium | Playwright 🏆 |
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|----------------------|------------------------------|-----------------------------|
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| **Installation** | More complex setup | Minimal + faster setup |
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| **Speed** | Slower due to architecture | Faster execution (async) |
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| **Multi-browser** | Requires config | Built-in Chrome, Firefox, WebKit support |
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| **Headless mode** | Less stable | Super stable |
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| **Async-friendly** | Not built-in | Native support via asyncio |
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| **Interaction APIs** | Limited | Richer simulation (mouse, scroll, etc.) |
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---
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## ⚙️ Features
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- ✅ **Full JavaScript rendering** using Chromium
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- ✅ **Human-like behavior simulation** (mouse movement, scrolling, typing)
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- ✅ **Caching** with `diskcache`
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- ✅ **Prometheus metrics**
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- ✅ **Asynchronous scraping logic**
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- ✅ **Content summarization via OpenAI GPT API**
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---
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## 🧠 Why not in JupyterLab?
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Due to the async nature of Playwright and the use of `asyncio.run()`, running this inside Jupyter causes `RuntimeError` conflicts.
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This solution was developed and tested in:
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- 💻 WingIDE 10 Pro
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- 🐧 Ubuntu via WSL
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- 🐍 Conda environment with Anaconda Python 3.12
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---
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## 🚀 How to Run
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1. Install dependencies:
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```bash
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pip install -r requirements.txt
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import asyncio
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from playwright.async_api import async_playwright
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from openai import OpenAI
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import logging
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import random
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import time
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import os
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from prometheus_client import start_http_server, Counter, Histogram
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from diskcache import Cache
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from dotenv import load_dotenv
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load_dotenv()
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# Setting up Prometheus metrics
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SCRAPE_ATTEMPTS = Counter('scrape_attempts', 'Total scraping attempts')
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SCRAPE_DURATION = Histogram(
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'scrape_duration', 'Scraping duration distribution')
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# Setting up cache
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cache = Cache('./scraper_cache')
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class ScrapingError(Exception):
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pass
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class ContentAnalysisError(Exception):
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pass
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class EnhancedOpenAIScraper:
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API_KEY = os.getenv("OPENAI_API_KEY")
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BROWSER_EXECUTABLE = os.getenv(
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"BROWSER_PATH", "/usr/bin/chromium-browser")
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MAX_CONTENT_LENGTH = int(os.getenv("MAX_CONTENT_LENGTH", 30000))
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def __init__(self, headless=True):
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self.user_agents = [
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
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]
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self.timeout = 45000 # 45 seconds
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self.retry_count = int(os.getenv("RETRY_COUNT", 2))
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self.headless = headless
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self.mouse_velocity_range = (100, 500) # px/ms
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self.interaction_delays = {
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'scroll': (int(os.getenv("SCROLL_DELAY_MIN", 500)), int(os.getenv("SCROLL_DELAY_MAX", 2000))),
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'click': (int(os.getenv("CLICK_DELAY_MIN", 100)), int(os.getenv("CLICK_DELAY_MAX", 300))),
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'movement': (int(os.getenv("MOVEMENT_DELAY_MIN", 50)), int(os.getenv("MOVEMENT_DELAY_MAX", 200)))
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}
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self.proxy_servers = [server.strip() for server in os.getenv(
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"PROXY_SERVERS", "").split(',') if server.strip()]
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async def human_interaction(self, page):
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"""Advanced simulation of user behavior"""
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# Random mouse movement path
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for _ in range(random.randint(2, 5)):
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x = random.randint(0, 1366)
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y = random.randint(0, 768)
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await page.mouse.move(x, y, steps=random.randint(5, 20))
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await page.wait_for_timeout(random.randint(*self.interaction_delays['movement']))
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# Simulating typing
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if random.random() < 0.3:
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await page.keyboard.press('Tab')
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await page.keyboard.type(' ', delay=random.randint(50, 200))
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# More realistic scrolling
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scroll_distance = random.choice([300, 600, 900])
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await page.mouse.wheel(0, scroll_distance)
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await page.wait_for_timeout(random.randint(*self.interaction_delays['scroll']))
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async def load_page(self, page, url):
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"""Smarter page loading with dynamic waiting"""
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start_time = time.time()
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try:
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await page.goto(url, wait_until="domcontentloaded", timeout=self.timeout)
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# Smarter content extraction selectors
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selectors = [
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'main article',
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'#main-content',
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'section:first-of-type',
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'div[class*="content"]',
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'body' # Fallback
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]
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for selector in selectors:
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try:
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element = await page.query_selector(selector)
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if element:
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return True
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except Exception:
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continue
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# Fallback if no selector is found within a certain time
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if time.time() - start_time < 30: # If we haven't used the full timeout
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await page.wait_for_timeout(30000 - int(time.time() - start_time))
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return True # Page likely loaded
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except Exception as e:
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logging.error(f"Error loading page {url}: {e}")
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return False
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@SCRAPE_DURATION.time()
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async def scrape_with_retry(self):
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"""Main function with retry mechanism and browser reuse"""
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SCRAPE_ATTEMPTS.inc()
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last_error = None
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browser = None
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context = None
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page = None
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try:
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async with async_playwright() as p:
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launch_args = {
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"headless": self.headless,
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"args": [
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"--disable-blink-features=AutomationControlled",
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"--single-process",
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"--no-sandbox",
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f"--user-agent={random.choice(self.user_agents)}"
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],
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"executable_path": self.BROWSER_EXECUTABLE
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}
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if self.proxy_servers:
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proxy_url = random.choice(self.proxy_servers)
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proxy_config = {"server": proxy_url}
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proxy_username = os.getenv('PROXY_USER')
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proxy_password = os.getenv('PROXY_PASS')
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if proxy_username and proxy_password:
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proxy_config['username'] = proxy_username
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proxy_config['password'] = proxy_password
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launch_args['proxy'] = proxy_config
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browser = await p.chromium.launch(**launch_args)
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context = await browser.new_context(
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user_agent=random.choice(self.user_agents),
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viewport={"width": 1366, "height": 768},
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locale=os.getenv("BROWSER_LOCALE", "en-US")
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)
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await context.route("**/*", lambda route: route.continue_())
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page = await context.new_page()
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await page.add_init_script("""
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Object.defineProperty(navigator, 'webdriver', { get: () => false });
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window.navigator.chrome = { runtime: {}, app: { isInstalled: false } };
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""")
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for attempt in range(self.retry_count):
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try:
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logging.info(
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f"Attempt {attempt + 1}: Loading OpenAI...")
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if not await self.load_page(page, "https://openai.com"):
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raise ScrapingError(
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"Failed to load key content on OpenAI website.")
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await self.human_interaction(page)
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await page.screenshot(path=f"openai_debug_{attempt}.png")
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content = await page.evaluate("""() => {
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const selectors = [
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'main article',
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'#main-content',
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'section:first-of-type',
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'div[class*="content"]'
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];
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let content = '';
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for (const selector of selectors) {
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const element = document.querySelector(selector);
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if (element) {
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content += element.innerText + '\\n\\n';
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}
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}
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return content.trim() || document.body.innerText;
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}""")
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if not content.strip():
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raise ContentAnalysisError(
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"No content extracted from the page.")
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return content[:self.MAX_CONTENT_LENGTH]
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except (ScrapingError, ContentAnalysisError) as e:
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last_error = e
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logging.warning(
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f"Attempt {attempt + 1} failed: {str(e)}")
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if attempt < self.retry_count - 1:
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await asyncio.sleep(5)
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else:
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if browser:
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await browser.close()
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browser = None
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raise
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except Exception as e:
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last_error = e
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logging.exception(f"Unexpected error on attempt {
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attempt + 1}: {str(e)}")
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if attempt < self.retry_count - 1:
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await asyncio.sleep(5)
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else:
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if browser:
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await browser.close()
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browser = None
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raise
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except Exception as e:
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last_error = e
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finally:
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if browser:
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await browser.close()
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raise last_error if last_error else Exception(
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"All scraping attempts failed.")
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async def get_cached_content(self):
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key = 'openai_content_cache_key'
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content = cache.get(key)
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if content is None:
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content = await self.scrape_with_retry()
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cache.set(key, content, expire=int(
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os.getenv("CACHE_EXPIRY", 3600)))
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return content
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async def analyze_content(headless=True):
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try:
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scraper = EnhancedOpenAIScraper(headless=headless)
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content = await scraper.get_cached_content()
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client = OpenAI(api_key=EnhancedOpenAIScraper.API_KEY)
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if not client.api_key:
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raise ContentAnalysisError(
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"OpenAI API key not configured (check environment variables).")
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prompt_template = """
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Analyze the following website content and extract the following information if present:
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1. **Overall Summary of the Website:** Provide a concise overview of the website's purpose and the main topics discussed.
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2. **Key Individuals or Entities:** Identify and briefly describe any prominent individuals, companies, or organizations mentioned.
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3. **Recent Announcements or Updates:** List any recent announcements, news, or updates found on the website, including dates if available.
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4. **Main Topics or Themes:** Identify the primary subjects or themes explored on the website.
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5. **Any Noteworthy Features or Projects:** Highlight any significant features, projects, or initiatives mentioned.
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Format the output clearly under each of these headings. If a particular piece of information is not found, indicate that it is not present.
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Content:
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{content}
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"""
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formatted_prompt = prompt_template.format(content=content)
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model_name = os.getenv("OPENAI_MODEL", "gpt-4-turbo")
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temperature = float(os.getenv("MODEL_TEMPERATURE", 0.3))
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max_tokens = int(os.getenv("MAX_TOKENS", 1500))
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top_p = float(os.getenv("MODEL_TOP_P", 0.9))
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response = client.chat.completions.create(
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model=model_name,
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messages=[
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{"role": "system", "content": "You are a helpful assistant that analyzes website content and extracts key information in a structured format."},
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{"role": "user", "content": formatted_prompt}
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],
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temperature=temperature,
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max_tokens=max_tokens,
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top_p=top_p
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)
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if not response.choices:
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raise ContentAnalysisError("Empty response from GPT.")
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return response.choices[0].message.content
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except (ScrapingError, ContentAnalysisError) as e:
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logging.error(f"Analysis failed: {str(e)}")
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return f"Critical analysis error: {str(e)}"
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except Exception as e:
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logging.exception("Unexpected error during analysis.")
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return f"Unexpected analysis error: {str(e)}"
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async def main():
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logging.basicConfig(
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level=os.getenv("LOG_LEVEL", "INFO").upper(),
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format='%(asctime)s - %(levelname)s - %(message)s'
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)
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# Start Prometheus HTTP server for exposing metrics
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try:
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prometheus_port = int(os.getenv("PROMETHEUS_PORT", 8000))
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start_http_server(prometheus_port)
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logging.info(f"Prometheus metrics server started on port {
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prometheus_port}")
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except Exception as e:
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logging.warning(f"Failed to start Prometheus metrics server: {e}")
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start_time = time.time()
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result = await analyze_content(headless=True)
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end_time = time.time()
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print(f"\nAnalysis completed in {end_time - start_time:.2f} seconds\n")
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print(result)
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if __name__ == "__main__":
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asyncio.run(main())
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