Update backtesting/lib.py

Author: kernc

backtesting/lib.py

@@ -441,13 +441,7 @@ def set_trailing_sl(self, n_atr: float = 6):
 
     def next(self):
         super().next()
-        """
-        self.data in init() is different from self.data in next(). self.data in init() has all the data. 
-        while the one in next() gets accumulated data over iterations. i.e. 5 iterations -> 5 data. n iteration -> n data. 
-        so doing self.data.Close[-1] in next() gets you the last record. 
-        but the same is not true for self.__atr, because self.__atr always has fully computed set from init(), 
-        so we need to use absolute index while accessing atr value from self.__atr.
-        """
+        # Can't use index=-1 because self.__atr is not an Indicator type
         index = len(self.data)-1
         for trade in self.trades:
             if trade.is_long: