Fix lint: use module-level logger in staticmethod, black formatting

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: MaximilianAnzinger

src/metrics/base.py

@@ -210,7 +210,11 @@ def adjust_difficulty_for_instructions(
                 "\n[Difficulty Band Check — %s]\n"
                 "  Requested: %s (%s–%s)\n"
                 "  Raw score: %s — within band, no adjustment.",
-                self.name, requested_difficulty, low, high, raw_score,
+                self.name,
+                requested_difficulty,
+                low,
+                high,
+                raw_score,
             )
             return raw_score
 
@@ -224,7 +228,14 @@ def adjust_difficulty_for_instructions(
             "  Requested: %s (%s–%s)\n"
             "  Raw score: %s — outside band by %.1f pts\n"
             "  Penalty:   -%s → %s",
-            self.name, requested_difficulty, low, high, raw_score, distance, penalty, adjusted,
+            self.name,
+            requested_difficulty,
+            low,
+            high,
+            raw_score,
+            distance,
+            penalty,
+            adjusted,
         )
         return adjusted
 
@@ -360,7 +371,12 @@ def adjust_score_for_custom_prompt(
             "  Relevant:   %s\n"
             "  Adjustment: %+.2f (%.1f → %.1f)\n"
             "  Reasoning:  %s",
-            self.name, relevant, adjustment, raw_score, final, reasoning,
+            self.name,
+            relevant,
+            adjustment,
+            raw_score,
+            final,
+            reasoning,
         )
 
         return final

src/runners/benchmark.py

@@ -17,6 +17,7 @@
 from ..utils.config_loader import ConfigLoader
 from ..utils.io import IOUtils
 
+logger = logging.getLogger(__name__)
 
 class BenchmarkRunner:
 
@@ -280,14 +281,19 @@ def _check_difficulty_compliance(
         in_band = low <= mean_difficulty <= high
 
         if in_band:
-            self.logger.debug(
+            logger.debug(
                 "\n[Difficulty Compliance — %s]"
                 "\n  Requested : %s (band %s–%s)"
                 "\n  Mean score: %s  ✓ within band"
                 "\n  Questions : %s scored"
                 "\n  Adjusted  : %s (no penalty)",
-                quiz_id, instructions.difficulty, low, high,
-                mean_difficulty, len(difficulty_scores), mean_difficulty,
+                quiz_id,
+                instructions.difficulty,
+                low,
+                high,
+                mean_difficulty,
+                len(difficulty_scores),
+                mean_difficulty,
             )
             return mean_difficulty
 
@@ -296,17 +302,24 @@ def _check_difficulty_compliance(
         penalty = round(min(distance * 0.5, 30.0), 1)
         adjusted = round(max(0.0, min(100.0, mean_difficulty - penalty)), 1)
 
-        self.logger.debug(
+        logger.debug(
             "\n[Difficulty Compliance — %s]"
             "\n  Requested : %s (band %s–%s)"
             "\n  Mean score: %s  ✗ outside band by %.1f pts"
             "\n  Penalty   : -%s → adjusted mean = %s"
             "\n  Questions : %s scored"
             "\n  Note      : Quiz overall difficulty does not match the "
             "'%s' instruction.",
-            quiz_id, instructions.difficulty, low, high,
-            mean_difficulty, distance, penalty, adjusted,
-            len(difficulty_scores), instructions.difficulty,
+            quiz_id,
+            instructions.difficulty,
+            low,
+            high,
+            mean_difficulty,
+            distance,
+            penalty,
+            adjusted,
+            len(difficulty_scores),
+            instructions.difficulty,
         )
         return adjusted