Small formatting upgrades

freqtrade/exceptions.py

@@ -1,5 +1,3 @@
-
-
 class FreqtradeException(Exception):
     """
     Freqtrade base exception. Handled at the outermost level.

freqtrade/strategy/hyper.py

@@ -292,7 +292,7 @@ class BooleanParameter(CategoricalParameter):
                          load=load, **kwargs)
 
 
-class HyperStrategyMixin(object):
+class HyperStrategyMixin:
     """
     A helper base class which allows HyperOptAuto class to reuse implementations of buy/sell
      strategy logic.

freqtrade/strategy/interface.py

@@ -30,7 +30,7 @@ logger = logging.getLogger(__name__)
 CUSTOM_SELL_MAX_LENGTH = 64
 
 
-class SellCheckTuple(object):
+class SellCheckTuple:
     """
     NamedTuple for Sell type + reason
     """

freqtrade/wallets.py

@@ -73,7 +73,7 @@ class Wallets:
             tot_profit = Trade.get_total_closed_profit()
         else:
             tot_profit = LocalTrade.total_profit
-        tot_in_trades = sum([trade.stake_amount for trade in open_trades])
+        tot_in_trades = sum(trade.stake_amount for trade in open_trades)
 
         current_stake = self.start_cap + tot_profit - tot_in_trades
         _wallets[self._config['stake_currency']] = Wallet(