feat: implement __str__ for marign and tradingmode enums

freqtrade/enums/marginmode.py

@@ -11,3 +11,6 @@ class MarginMode(str, Enum):
     CROSS = "cross"
     ISOLATED = "isolated"
     NONE = ""
+
+    def __str__(self):
+        return f"{self.name.lower()}"

freqtrade/enums/tradingmode.py

@@ -10,3 +10,6 @@ class TradingMode(str, Enum):
     SPOT = "spot"
     MARGIN = "margin"
     FUTURES = "futures"
+
+    def __str__(self):
+        return f"{self.name.lower()}"

freqtrade/exchange/binance.py

@@ -192,7 +192,7 @@ class Binance(Exchange):
         if maintenance_amt is None:
             raise OperationalException(
                 "Parameter maintenance_amt is required by Binance.liquidation_price"
-                f"for {self.trading_mode.value}"
+                f"for {self.trading_mode}"
             )
 
         if self.trading_mode == TradingMode.FUTURES:

freqtrade/exchange/exchange.py

@@ -707,7 +707,7 @@ class Exchange:
             # Note: ccxt has BaseCurrency/QuoteCurrency format for pairs
             if self.markets and pair not in self.markets:
                 raise OperationalException(
-                    f"Pair {pair} is not available on {self.name} {self.trading_mode.value}. "
+                    f"Pair {pair} is not available on {self.name} {self.trading_mode}. "
                     f"Please remove {pair} from your whitelist."
                 )
 
@@ -890,7 +890,7 @@ class Exchange:
         ):
             mm_value = margin_mode and margin_mode.value
             raise OperationalException(
-                f"Freqtrade does not support {mm_value} {trading_mode.value} on {self.name}"
+                f"Freqtrade does not support {mm_value} {trading_mode} on {self.name}"
             )
 
     def get_option(self, param: str, default: Optional[Any] = None) -> Any:

freqtrade/persistence/trade_model.py

@@ -623,7 +623,7 @@ class LocalTrade:
         self.orders = []
         if self.trading_mode == TradingMode.MARGIN and self.interest_rate is None:
             raise OperationalException(
-                f"{self.trading_mode.value} trading requires param interest_rate on trades"
+                f"{self.trading_mode} trading requires param interest_rate on trades"
             )
 
     def __repr__(self):
@@ -1079,7 +1079,7 @@ class LocalTrade:
                 return float(self._calc_base_close(amount1, rate, self.fee_close)) + funding_fees
         else:
             raise OperationalException(
-                f"{self.trading_mode.value} trading is not yet available using freqtrade"
+                f"{self.trading_mode} trading is not yet available using freqtrade"
             )
 
     def calc_profit(