Convert InformativeData to dataclass

freqtrade/strategy/informative_decorator.py

@@ -1,4 +1,5 @@
-from typing import Any, Callable, NamedTuple, Optional, Union
+from dataclasses import dataclass
+from typing import Any, Callable, Optional, Union
 
 from pandas import DataFrame
 
@@ -10,7 +11,8 @@ from freqtrade.strategy.strategy_helper import merge_informative_pair
 PopulateIndicators = Callable[[Any, DataFrame, dict], DataFrame]
 
 
-class InformativeData(NamedTuple):
+@dataclass
+class InformativeData:
     asset: Optional[str]
     timeframe: str
     fmt: Union[str, Callable[[Any], str], None]

freqtrade/strategy/interface.py

@@ -158,9 +158,7 @@ class IStrategy(ABC, HyperStrategyMixin):
                     raise OperationalException('Informative timeframe must be equal or higher than '
                                                'strategy timeframe!')
                 if not informative_data.candle_type:
-                    informative_data = InformativeData(
-                        informative_data.asset, informative_data.timeframe, informative_data.fmt,
-                        informative_data.ffill, config['candle_type_def'])
+                    informative_data.candle_type = config['candle_type_def']
                 self._ft_informative.append((informative_data, cls_method))
 
     @abstractmethod