style: auto-fix lint violations from enhanced ruff rules

1 files changed, 5 insertions, 5 deletions

diff --git a/services/backtester/tests/test_walk_forward.py b/services/backtester/tests/test_walk_forward.py
index 96abb6e..b1aa12c 100644
--- a/services/backtester/tests/test_walk_forward.py
+++ b/services/backtester/tests/test_walk_forward.py
@@ -1,18 +1,18 @@
 """Tests for walk-forward analysis."""
 
 import sys
-from pathlib import Path
+from datetime import UTC, datetime, timedelta
 from decimal import Decimal
-from datetime import datetime, timedelta, timezone
-
+from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))
 sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "strategy-engine"))
 
-from shared.models import Candle
 from backtester.walk_forward import WalkForwardEngine, WalkForwardResult
 from strategies.rsi_strategy import RsiStrategy
 
+from shared.models import Candle
+
 
 def _generate_candles(n=100, base_price=100.0):
     candles = []
@@ -23,7 +23,7 @@ def _generate_candles(n=100, base_price=100.0):
             Candle(
                 symbol="AAPL",
                 timeframe="1h",
-                open_time=datetime(2025, 1, 1, tzinfo=timezone.utc) + timedelta(hours=i),
+                open_time=datetime(2025, 1, 1, tzinfo=UTC) + timedelta(hours=i),
                 open=Decimal(str(price)),
                 high=Decimal(str(price + 5)),
                 low=Decimal(str(price - 5)),