added flake8 settings and optimization

freqtrade/constants.py

@@ -35,7 +35,7 @@ SUPPORTED_FIAT = [
     "KRW", "MXN", "MYR", "NOK", "NZD", "PHP", "PKR", "PLN",
     "RUB", "SEK", "SGD", "THB", "TRY", "TWD", "ZAR", "USD",
     "BTC", "ETH", "XRP", "LTC", "BCH", "USDT"
-    ]
+]
 
 # Required json-schema for user specified config
 CONF_SCHEMA = {

freqtrade/exchange/__init__.py

@@ -45,6 +45,7 @@ def retrier(f):
             else:
                 logger.warning('Giving up retrying: %s()', f.__name__)
                 raise ex
+
     return wrapper
 
 
@@ -299,8 +300,8 @@ def get_ticker_history(pair: str, tick_interval: str, since_ms: Optional[int] =
     try:
         # last item should be in the time interval [now - tick_interval, now]
         till_time_ms = arrow.utcnow().shift(
-                        minutes=-constants.TICKER_INTERVAL_MINUTES[tick_interval]
-                       ).timestamp * 1000
+            minutes=-constants.TICKER_INTERVAL_MINUTES[tick_interval]
+        ).timestamp * 1000
         # it looks as if some exchanges return cached data
         # and they update it one in several minute, so 10 mins interval
         # is necessary to skeep downloading of an empty array when all

freqtrade/optimize/backtesting.py

@@ -75,8 +75,7 @@ class Backtesting(object):
             (arrow.get(min(frame.date)), arrow.get(max(frame.date)))
             for frame in data.values()
         ]
-        return min(timeframe, key=operator.itemgetter(0))[0], \
-               max(timeframe, key=operator.itemgetter(1))[1]
+        return min(timeframe, key=operator.itemgetter(0))[0], max(timeframe, key=operator.itemgetter(1))[1]
 
     def _generate_text_table(self, data: Dict[str, Dict], results: DataFrame) -> str:
         """

freqtrade/strategy/default_strategy.py

@@ -16,10 +16,10 @@ class DefaultStrategy(IStrategy):
 
     # Minimal ROI designed for the strategy
     minimal_roi = {
-        "40":  0.0,
-        "30":  0.01,
-        "20":  0.02,
-        "0":  0.04
+        "40": 0.0,
+        "30": 0.01,
+        "20": 0.02,
+        "0": 0.04
     }
 
     # Optimal stoploss designed for the strategy
@@ -204,14 +204,14 @@ class DefaultStrategy(IStrategy):
         """
         dataframe.loc[
             (
-                (dataframe['rsi'] < 35) &
-                (dataframe['fastd'] < 35) &
-                (dataframe['adx'] > 30) &
-                (dataframe['plus_di'] > 0.5)
+                    (dataframe['rsi'] < 35) &
+                    (dataframe['fastd'] < 35) &
+                    (dataframe['adx'] > 30) &
+                    (dataframe['plus_di'] > 0.5)
             ) |
             (
-                (dataframe['adx'] > 65) &
-                (dataframe['plus_di'] > 0.5)
+                    (dataframe['adx'] > 65) &
+                    (dataframe['plus_di'] > 0.5)
             ),
             'buy'] = 1
 
@@ -225,16 +225,16 @@ class DefaultStrategy(IStrategy):
         """
         dataframe.loc[
             (
-                (
-                    (qtpylib.crossed_above(dataframe['rsi'], 70)) |
-                    (qtpylib.crossed_above(dataframe['fastd'], 70))
-                ) &
-                (dataframe['adx'] > 10) &
-                (dataframe['minus_di'] > 0)
+                    (
+                            (qtpylib.crossed_above(dataframe['rsi'], 70)) |
+                            (qtpylib.crossed_above(dataframe['fastd'], 70))
+                    ) &
+                    (dataframe['adx'] > 10) &
+                    (dataframe['minus_di'] > 0)
             ) |
             (
-                (dataframe['adx'] > 70) &
-                (dataframe['minus_di'] > 0.5)
+                    (dataframe['adx'] > 70) &
+                    (dataframe['minus_di'] > 0.5)
             ),
             'sell'] = 1
         return dataframe

freqtrade/strategy/resolver.py

@@ -40,7 +40,6 @@ class StrategyResolver(object):
         self.strategy: IStrategy = self._load_strategy(strategy_name,
                                                        extra_dir=config.get('strategy_path'))
 
-
         # Set attributes
         # Check if we need to override configuration
         if 'minimal_roi' in config: