fix: resolve all ruff linting errors and add Python 3.9 compatibility

Author: vzucher

src/brightdata/api/base.py

@@ -40,7 +40,7 @@ def _execute_sync(self, *args: Any, **kwargs: Any) -> Any:
         Wraps async method using asyncio.run() for sync compatibility.
         """
         try:
-            loop = asyncio.get_running_loop()
+            asyncio.get_running_loop()
             raise RuntimeError(
                 "Cannot call sync method from async context. Use async method instead."
             )

src/brightdata/api/search_service.py

@@ -12,6 +12,13 @@
 
 if TYPE_CHECKING:
     from ..client import BrightDataClient
+    from .serp.google import GoogleSERPService
+    from .serp.bing import BingSERPService
+    from .serp.yandex import YandexSERPService
+    from ..scrapers.amazon.search import AmazonSearchScraper
+    from ..scrapers.linkedin.search import LinkedInSearchScraper
+    from ..scrapers.chatgpt.search import ChatGPTSearchService
+    from ..scrapers.instagram.search import InstagramSearchScraper
 
 
 class SearchService:

src/brightdata/api/serp/base.py

@@ -3,16 +3,15 @@
 import asyncio
 import aiohttp
 import json
-from typing import Union, List, Optional, Dict, Any
+from typing import Union, List, Optional
 from datetime import datetime, timezone
 
 from .url_builder import BaseURLBuilder
 from .data_normalizer import BaseDataNormalizer
 from ...core.engine import AsyncEngine
 from ...models import SearchResult
-from ...types import NormalizedSERPData
 from ...constants import HTTP_OK
-from ...exceptions import ValidationError, APIError
+from ...exceptions import ValidationError
 from ...utils.validation import validate_zone_name
 from ...utils.retry import retry_with_backoff
 from ...utils.function_detection import get_caller_function_name

src/brightdata/api/serp/data_normalizer.py

@@ -2,7 +2,7 @@
 
 import warnings
 from abc import ABC, abstractmethod
-from typing import Any, Dict, List
+from typing import Any
 from ...types import NormalizedSERPData
 
 

src/brightdata/api/serp/url_builder.py

@@ -1,7 +1,7 @@
 """URL builder for SERP search engines."""
 
 from abc import ABC, abstractmethod
-from typing import Optional, Dict, Any
+from typing import Optional
 from urllib.parse import quote_plus
 from ...utils.location import LocationService, LocationFormat
 

src/brightdata/cli/banner.py

@@ -22,7 +22,7 @@ def _supports_color() -> bool:
             # Enable ANSI escape sequences on Windows
             kernel32.SetConsoleMode(kernel32.GetStdHandle(-11), 7)
             return True
-        except:
+        except Exception:
             return False
 
     # Check for common environment variables

src/brightdata/cli/commands/scrape.py

@@ -3,7 +3,7 @@
 """
 
 import click
-from typing import Optional, List
+from typing import Optional
 
 from ..utils import create_client, output_result, handle_error
 

src/brightdata/cli/commands/search.py

@@ -3,7 +3,7 @@
 """
 
 import click
-from typing import Optional, List
+from typing import Optional
 
 from ..utils import create_client, output_result, handle_error
 

src/brightdata/cli/main.py

@@ -6,7 +6,6 @@
 
 import click
 import sys
-import io
 
 from .commands import scrape_group, search_group
 from .banner import print_banner

src/brightdata/cli/utils.py

@@ -4,7 +4,7 @@
 
 import json
 import sys
-from typing import Optional, Any, Dict
+from typing import Optional, Any
 import click
 
 from ..client import BrightDataClient