black format

qlib/backtest/order.py

@@ -4,6 +4,7 @@ import pandas as pd
 from dataclasses import dataclass, field
 from typing import ClassVar
 
+
 @dataclass
 class Order:
     """
@@ -17,6 +18,7 @@ class Order:
     factor : float
             presents the weight factor assigned in Exchange()
     """
+
     stock_id: str
     amount: float
     start_time: pd.Timestamp
@@ -27,9 +29,7 @@ class Order:
     SELL: ClassVar[int] = 0
     BUY: ClassVar[int] = 1
 
-
     def __post_init__(self):
         if self.direction not in {Order.SELL, Order.BUY}:
             raise NotImplementedError("direction not supported, `Order.SELL` for sell, `Order.BUY` for buy")
         self.deal_amount = 0
-