revert to random object

freqtrade/plugins/pairlist/ShuffleFilter.py

@@ -28,6 +28,8 @@ class ShuffleFilter(IPairList):
             self._seed = pairlistconfig.get('seed')
             logger.info(f"Backtesting mode detected, applying seed value: {self._seed}")
 
+        self._random = random.Random(self._seed)
+
     @property
     def needstickers(self) -> bool:
         """
@@ -53,7 +55,6 @@ class ShuffleFilter(IPairList):
         :return: new whitelist
         """
         # Shuffle is done inplace
-        random.seed(self._seed)
-        random.shuffle(pairlist)
+        self._random.shuffle(pairlist)
 
         return pairlist