diff --git a/litellm/proxy/litellm_pre_call_utils.py b/litellm/proxy/litellm_pre_call_utils.py
index 1fd81eccfd0..089731c473d 100644
--- a/litellm/proxy/litellm_pre_call_utils.py
+++ b/litellm/proxy/litellm_pre_call_utils.py
@@ -24,7 +24,6 @@ from litellm.proxy._types import (
 _SPECIAL_HEADERS_CACHE = frozenset(
     v.value.lower() for v in SpecialHeaders._member_map_.values()
 )
-from litellm.proxy.auth.route_checks import RouteChecks
 from litellm.router import Router
 from litellm.types.llms.anthropic import ANTHROPIC_API_HEADERS
 from litellm.types.services import ServiceTypes
diff --git a/litellm/router.py b/litellm/router.py
index 85fc7e90075..c6409ce1680 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -1536,7 +1536,7 @@ class Router:
             )
             raise e
 
-    async def _acompletion_streaming_iterator(
+    async def _acompletion_streaming_iterator(  # noqa: PLR0915
         self,
         model_response: CustomStreamWrapper,
         messages: List[Dict[str, str]],
diff --git a/litellm/router_strategy/complexity_router/evals/eval_complexity_router.py b/litellm/router_strategy/complexity_router/evals/eval_complexity_router.py
index b16af353449..e671b97c575 100644
--- a/litellm/router_strategy/complexity_router/evals/eval_complexity_router.py
+++ b/litellm/router_strategy/complexity_router/evals/eval_complexity_router.py
@@ -4,15 +4,16 @@ Evaluation suite for the ComplexityRouter.
 Tests the router's ability to correctly classify prompts into complexity tiers.
 Run with: python -m litellm.router_strategy.complexity_router.evals.eval_complexity_router
 """
-import json
-from dataclasses import dataclass
-from enum import Enum
-from typing import List, Optional, Tuple
-from unittest.mock import MagicMock
+import os
 
 # Add parent to path for imports
 import sys
-import os
+
+# ruff: noqa: T201
+from dataclasses import dataclass
+from typing import List, Optional, Tuple
+from unittest.mock import MagicMock
+
 sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "../../../../..")))
 
 from litellm.router_strategy.complexity_router.complexity_router import ComplexityRouter
@@ -241,10 +242,10 @@ def run_eval() -> Tuple[int, int, List[dict]]:
     total = len(EVAL_CASES)
     failures = []
     
-    print("=" * 70)
-    print("COMPLEXITY ROUTER EVALUATION")
-    print("=" * 70)
-    print()
+    print("=" * 70)  # noqa: T201
+    print("COMPLEXITY ROUTER EVALUATION")  # noqa: T201
+    print("=" * 70)  # noqa: T201
+    print()  # noqa: T201
     
     for i, case in enumerate(EVAL_CASES, 1):
         tier, score, signals = router.classify(case.prompt, case.system_prompt)
@@ -274,30 +275,29 @@ def run_eval() -> Tuple[int, int, List[dict]]:
             })
         
         # Print result
-        match_type = "exact" if is_exact_match else ("acceptable" if is_acceptable else "mismatch")
-        print(f"[{i:2d}] {status} | {case.description}")
-        print(f"     Expected: {case.expected_tier.value:10s} | Got: {tier.value:10s} | Score: {score:+.3f}")
+        print(f"[{i:2d}] {status} | {case.description}")  # noqa: T201
+        print(f"     Expected: {case.expected_tier.value:10s} | Got: {tier.value:10s} | Score: {score:+.3f}")  # noqa: T201
         if signals:
-            print(f"     Signals: {', '.join(signals)}")
+            print(f"     Signals: {', '.join(signals)}")  # noqa: T201
         if not is_pass:
-            print(f"     Prompt: {case.prompt[:60]}...")
-        print()
+            print(f"     Prompt: {case.prompt[:60]}...")  # noqa: T201
+        print()  # noqa: T201
     
     # Summary
-    print("=" * 70)
-    print(f"RESULTS: {passed}/{total} passed ({100*passed/total:.1f}%)")
-    print("=" * 70)
+    print("=" * 70)  # noqa: T201
+    print(f"RESULTS: {passed}/{total} passed ({100*passed/total:.1f}%)")  # noqa: T201
+    print("=" * 70)  # noqa: T201
     
     if failures:
-        print("\nFAILURES:")
-        print("-" * 70)
+        print("\nFAILURES:")  # noqa: T201
+        print("-" * 70)  # noqa: T201
         for f in failures:
-            print(f"Case {f['case']}: {f['description']}")
-            print(f"  Expected: {f['expected']}, Got: {f['actual']} (score: {f['score']})")
-            print(f"  Signals: {f['signals']}")
+            print(f"Case {f['case']}: {f['description']}")  # noqa: T201
+            print(f"  Expected: {f['expected']}, Got: {f['actual']} (score: {f['score']})")  # noqa: T201
+            print(f"  Signals: {f['signals']}")  # noqa: T201
             if f['acceptable']:
-                print(f"  Acceptable: {f['acceptable']}")
-            print()
+                print(f"  Acceptable: {f['acceptable']}")  # noqa: T201
+            print()  # noqa: T201
     
     return passed, total, failures
 
@@ -309,13 +309,13 @@ def main():
     # Exit with error code if too many failures
     pass_rate = passed / total
     if pass_rate < 0.80:
-        print(f"\n❌ EVAL FAILED: Pass rate {pass_rate:.1%} is below 80% threshold")
+        print(f"\n❌ EVAL FAILED: Pass rate {pass_rate:.1%} is below 80% threshold")  # noqa: T201
         sys.exit(1)
     elif pass_rate < 0.90:
-        print(f"\n⚠️  EVAL WARNING: Pass rate {pass_rate:.1%} is below 90%")
+        print(f"\n⚠️  EVAL WARNING: Pass rate {pass_rate:.1%} is below 90%")  # noqa: T201
         sys.exit(0)
     else:
-        print(f"\n✅ EVAL PASSED: Pass rate {pass_rate:.1%}")
+        print(f"\n✅ EVAL PASSED: Pass rate {pass_rate:.1%}")  # noqa: T201
         sys.exit(0)