removing global variable modification

freqtrade/strategy/interface.py

@@ -203,7 +203,7 @@ class IStrategy(ABC):
         return buy, sell
 
     def should_sell(self, trade: Trade, rate: float, date: datetime, buy: bool,
-                    sell: bool, force_stoploss=0) -> SellCheckTuple:
+                    sell: bool, force_stoploss: float=0) -> SellCheckTuple:
         """
         This function evaluate if on the condition required to trigger a sell has been reached
         if the threshold is reached and updates the trade record.