diff --git a/qlib/backtest/__init__.py b/qlib/backtest/__init__.py
index 96120dd80..0dde75f40 100644
--- a/qlib/backtest/__init__.py
+++ b/qlib/backtest/__init__.py
@@ -6,12 +6,10 @@ from typing import Union
 from .account import Account
 from .exchange import Exchange
 from .executor import BaseExecutor
-
 from .backtest import backtest_loop
 from .backtest import collect_data_loop
-from .utils import CommonInfrastructure, TradeCalendarManager
 from .order import Order
-
+from .utils import CommonInfrastructure, TradeCalendarManager
 from ..strategy.base import BaseStrategy
 from ..utils import init_instance_by_config
 from ..log import get_module_logger