Refactor imports for PEP 8 compliance and clarity

- Organized imports in browser_manager.py by category (stdlib, 3rd-party, local)
- Organized imports in browser_profiler.py by category
- Cleaned up test file imports for consistency
- All imports alphabetized within their categories

Co-authored-by: Ahmed-Tawfik94 <106467151+Ahmed-Tawfik94@users.noreply.github.com>

crawl4ai/browser_manager.py

@@ -1,21 +1,26 @@
+# Standard library imports
 import asyncio
-import time
-from typing import List, Optional
+import hashlib
 import os
-import sys
+import shlex
 import shutil
-import tempfile
-import psutil  
 import signal
 import subprocess
-import shlex
-from playwright.async_api import BrowserContext
-import hashlib
-from .js_snippet import load_js_script
-from .config import DOWNLOAD_PAGE_TIMEOUT
-from .async_configs import BrowserConfig, CrawlerRunConfig
-from .utils import get_chromium_path
+import sys
+import tempfile
+import time
 import warnings
+from typing import List, Optional
+
+# Third-party imports
+import psutil
+from playwright.async_api import BrowserContext
+
+# Local imports
+from .async_configs import BrowserConfig, CrawlerRunConfig
+from .config import DOWNLOAD_PAGE_TIMEOUT
+from .js_snippet import load_js_script
+from .utils import get_chromium_path
 
 
 BROWSER_DISABLE_OPTIONS = [

crawl4ai/browser_profiler.py

@@ -5,22 +5,26 @@ This module provides a dedicated class for managing browser profiles
 that can be used for identity-based crawling with Crawl4AI.
 """
 
-import os
+# Standard library imports
 import asyncio
-import signal
-import sys
 import datetime
-import uuid
-import shutil
 import json
+import os
+import shutil
+import signal
 import subprocess
+import sys
 import time
-from typing import List, Dict, Optional, Any
+import uuid
+from typing import Any, Dict, List, Optional
+
+# Third-party imports
 from rich.console import Console
 
+# Local imports
 from .async_configs import BrowserConfig
-from .browser_manager import ManagedBrowser
 from .async_logger import AsyncLogger, AsyncLoggerBase, LogColor
+from .browser_manager import ManagedBrowser
 from .utils import get_home_folder
 
 

tests/browser/test_cdp_concurrency.py

@@ -8,15 +8,19 @@ in managed browsers (CDP mode) work correctly, particularly:
 3. Multiple concurrent arun_many calls work correctly
 """
 
+# Standard library imports
 import asyncio
-import pytest
-import sys
 import os
+import sys
+
+# Third-party imports
+import pytest
 
 # Add the project root to Python path
 sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
 
-from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode
+# Local imports
+from crawl4ai import AsyncWebCrawler, BrowserConfig, CacheMode, CrawlerRunConfig
 
 
 @pytest.mark.asyncio