Added support for max_open_trades hyperopting

freqtrade/strategy/hyper.py

@@ -80,6 +80,8 @@ class HyperStrategyMixin:
 
             self.stoploss = params.get('stoploss', {}).get(
                 'stoploss', getattr(self, 'stoploss', -0.1))
+            self.max_open_trades = params.get('max_open_trades', {}).get(
+                'max_open_trades', getattr(self, 'max_open_trades', -1))
             trailing = params.get('trailing', {})
             self.trailing_stop = trailing.get(
                 'trailing_stop', getattr(self, 'trailing_stop', False))

freqtrade/strategy/interface.py

@@ -54,6 +54,9 @@ class IStrategy(ABC, HyperStrategyMixin):
     # associated stoploss
     stoploss: float
 
+    # max open trades for the strategy
+    max_open_trades:  int | float
+
     # trailing stoploss
     trailing_stop: bool = False
     trailing_stop_positive: Optional[float] = None