fix mypy errors

Author: madhuchavva

growthbook/growthbook_client.py

@@ -355,7 +355,7 @@ def _track(self, experiment: Experiment, result: Result, user_context: UserConte
         with self._tracked_lock:
             if not self._tracked.get(key):
                 try:
-                    self.options.on_experiment_viewed(experiment=experiment, result=result, user_context=user_context)
+                    self.options.on_experiment_viewed(experiment, result, user_context)
                     self._tracked[key] = True
                 except Exception:
                     logger.exception("Error in tracking callback")

growthbook/plugins/growthbook_tracking.py

@@ -5,11 +5,10 @@
 from typing import Dict, Any, Optional, List, Callable
 from .base import GrowthBookPlugin
 
-requests: Any = None
 try:
     import requests
 except ImportError:
-    pass
+    requests = None
 
 logger = logging.getLogger("growthbook.plugins.growthbook_tracking")
 

growthbook/plugins/request_context.py

@@ -77,7 +77,7 @@ def __init__(
         self.client_side_attributes = client_side_attributes
         self.extract_utm = extract_utm
         self.extract_user_agent = extract_user_agent
-        self._extracted_attributes = {}
+        self._extracted_attributes: Dict[str, Any] = {}
 
     def initialize(self, gb_instance) -> None:
         """Initialize plugin - extract attributes from request context."""