Fix type checking

Author: MDUYN

investing_algorithm_framework/domain/services/market_service.py

@@ -45,7 +45,7 @@ def get_orders(self, symbol, market, since: datetime = None):
         raise NotImplementedError()
 
     @abstractmethod
-    def get_balance(self, market) -> dict[str, float]:
+    def get_balance(self, market) -> Dict[str, float]:
         raise NotImplementedError()
 
     @abstractmethod

investing_algorithm_framework/infrastructure/services/market_service/ccxt_market_service.py

@@ -173,7 +173,7 @@ def get_orders(self, symbol, market, since: datetime = None):
                 logger.exception(e)
                 raise OperationalException("Could not retrieve orders")
 
-    def get_balance(self, market):
+    def get_balance(self, market) -> Dict[str, float]:
         market_credential = self.get_market_credential(market)
 
         if market_credential is None: