Merge pull request #1623 from iuvbio/markets_refactor

Markets refactor

freqtrade/freqtradebot.py

@@ -155,6 +155,9 @@ class FreqtradeBot(object):
         """
         state_changed = False
         try:
+            # Check whether markets have to be reloaded
+            self.exchange._reload_markets()
+
             # Refresh whitelist
             self.pairlists.refresh_pairlist()
             self.active_pair_whitelist = self.pairlists.whitelist
@@ -280,12 +283,10 @@ class FreqtradeBot(object):
         return stake_amount
 
     def _get_min_pair_stake_amount(self, pair: str, price: float) -> Optional[float]:
-        markets = self.exchange.get_markets()
-        markets = [m for m in markets if m['symbol'] == pair]
-        if not markets:
-            raise ValueError(f'Can\'t get market information for symbol {pair}')
-
-        market = markets[0]
+        try:
+            market = self.exchange.markets[pair]
+        except KeyError:
+            raise ValueError(f"Can't get market information for symbol {pair}")
 
         if 'limits' not in market:
             return None