Added suppoort for regex in whitelist

freqtrade/plugins/pairlist/IPairList.py

@@ -124,6 +124,15 @@ class IPairList(LoggingMixin, ABC):
         """
         return self._pairlistmanager.verify_blacklist(pairlist, logmethod)
 
+    def verify_whitelist(self, pairlist: List[str], logmethod) -> List[str]:
+        """
+        Proxy method to verify_whitelist for easy access for child classes.
+        :param pairlist: Pairlist to validate
+        :param logmethod: Function that'll be called, `logger.info` or `logger.warning`.
+        :return: pairlist - whitelisted pairs
+        """
+        return self._pairlistmanager.verify_whitelist(pairlist, logmethod)
+
     def _whitelist_for_active_markets(self, pairlist: List[str]) -> List[str]:
         """
         Check available markets and remove pair from whitelist if necessary

freqtrade/plugins/pairlist/StaticPairList.py

@@ -50,9 +50,10 @@ class StaticPairList(IPairList):
         :return: List of pairs
         """
         if self._allow_inactive:
-            return self._config['exchange']['pair_whitelist']
+            return self.verify_whitelist(self._config['exchange']['pair_whitelist'], logger.info)
         else:
-            return self._whitelist_for_active_markets(self._config['exchange']['pair_whitelist'])
+            return self._whitelist_for_active_markets(
+                self.verify_whitelist(self._config['exchange']['pair_whitelist'], logger.info))
 
     def filter_pairlist(self, pairlist: List[str], tickers: Dict) -> List[str]:
         """

freqtrade/plugins/pairlistmanager.py

@@ -59,6 +59,11 @@ class PairListManager():
         """The expanded blacklist (including wildcard expansion)"""
         return expand_pairlist(self._blacklist, self._exchange.get_markets().keys())
 
+    @property
+    def expanded_whitelist(self) -> List[str]:
+        """The expanded whitelist (including wildcard expansion)"""
+        return expand_pairlist(self._whitelist, self._exchange.get_markets().keys())
+
     @property
     def name_list(self) -> List[str]:
         """Get list of loaded Pairlist Handler names"""
@@ -129,6 +134,21 @@ class PairListManager():
                 pairlist.remove(pair)
         return pairlist
 
+    def verify_whitelist(self, pairlist: List[str], logmethod) -> List[str]:
+        """
+        Verify and remove items from pairlist - returning a filtered pairlist.
+        Logs a warning or info depending on `aswarning`.
+        Pairlist Handlers explicitly using this method shall use
+        `logmethod=logger.info` to avoid spamming with warning messages
+        :return: pairlist - blacklisted pairs
+        """
+        try:
+            whitelist = self.expanded_whitelist
+        except ValueError as err:
+            logger.error(f"Pair blacklist contains an invalid Wildcard: {err}")
+            return []
+        return whitelist
+
     def create_pair_list(self, pairs: List[str], timeframe: str = None) -> ListPairsWithTimeframes:
         """
         Create list of pair tuples with (pair, timeframe)