Merge pull request #3570 from gambcl/develop

Added range checks to min_days_listed in AgeFilter

freqtrade/exchange/exchange.py

@@ -187,6 +187,11 @@ class Exchange:
     def timeframes(self) -> List[str]:
         return list((self._api.timeframes or {}).keys())
 
+    @property
+    def ohlcv_candle_limit(self) -> int:
+        """exchange ohlcv candle limit"""
+        return int(self._ohlcv_candle_limit)
+
     @property
     def markets(self) -> Dict:
         """exchange ccxt markets"""

freqtrade/pairlist/AgeFilter.py

@@ -5,6 +5,7 @@ import logging
 import arrow
 from typing import Any, Dict
 
+from freqtrade.exceptions import OperationalException
 from freqtrade.misc import plural
 from freqtrade.pairlist.IPairList import IPairList
 
@@ -23,6 +24,13 @@ class AgeFilter(IPairList):
         super().__init__(exchange, pairlistmanager, config, pairlistconfig, pairlist_pos)
 
         self._min_days_listed = pairlistconfig.get('min_days_listed', 10)
+
+        if self._min_days_listed < 1:
+            raise OperationalException("AgeFilter requires min_days_listed must be >= 1")
+        if self._min_days_listed > exchange.ohlcv_candle_limit:
+            raise OperationalException("AgeFilter requires min_days_listed must not exceed "
+                                       "exchange max request size "
+                                       f"({exchange.ohlcv_candle_limit})")
         self._enabled = self._min_days_listed >= 1
 
     @property

freqtrade/pairlist/PriceFilter.py

@@ -18,7 +18,11 @@ class PriceFilter(IPairList):
         super().__init__(exchange, pairlistmanager, config, pairlistconfig, pairlist_pos)
 
         self._low_price_ratio = pairlistconfig.get('low_price_ratio', 0)
-        self._enabled = self._low_price_ratio != 0
+        self._min_price = pairlistconfig.get('min_price', 0)
+        self._max_price = pairlistconfig.get('max_price', 0)
+        self._enabled = ((self._low_price_ratio != 0) or
+                         (self._min_price != 0) or
+                         (self._max_price != 0))
 
     @property
     def needstickers(self) -> bool:
@@ -33,7 +37,18 @@ class PriceFilter(IPairList):
         """
         Short whitelist method description - used for startup-messages
         """
-        return f"{self.name} - Filtering pairs priced below {self._low_price_ratio * 100}%."
+        active_price_filters = []
+        if self._low_price_ratio != 0:
+            active_price_filters.append(f"below {self._low_price_ratio * 100}%")
+        if self._min_price != 0:
+            active_price_filters.append(f"below {self._min_price:.8f}")
+        if self._max_price != 0:
+            active_price_filters.append(f"above {self._max_price:.8f}")
+
+        if len(active_price_filters):
+            return f"{self.name} - Filtering pairs priced {' or '.join(active_price_filters)}."
+
+        return f"{self.name} - No price filters configured."
 
     def _validate_pair(self, ticker) -> bool:
         """
@@ -46,10 +61,28 @@ class PriceFilter(IPairList):
                                 f"Removed {ticker['symbol']} from whitelist, because "
                                 "ticker['last'] is empty (Usually no trade in the last 24h).")
             return False
-        compare = self._exchange.price_get_one_pip(ticker['symbol'], ticker['last'])
-        changeperc = compare / ticker['last']
-        if changeperc > self._low_price_ratio:
-            self.log_on_refresh(logger.info, f"Removed {ticker['symbol']} from whitelist, "
-                                             f"because 1 unit is {changeperc * 100:.3f}%")
-            return False
+
+        # Perform low_price_ratio check.
+        if self._low_price_ratio != 0:
+            compare = self._exchange.price_get_one_pip(ticker['symbol'], ticker['last'])
+            changeperc = compare / ticker['last']
+            if changeperc > self._low_price_ratio:
+                self.log_on_refresh(logger.info, f"Removed {ticker['symbol']} from whitelist, "
+                                                 f"because 1 unit is {changeperc * 100:.3f}%")
+                return False
+
+        # Perform min_price check.
+        if self._min_price != 0:
+            if ticker['last'] < self._min_price:
+                self.log_on_refresh(logger.info, f"Removed {ticker['symbol']} from whitelist, "
+                                                 f"because last price < {self._min_price:.8f}")
+                return False
+
+        # Perform max_price check.
+        if self._max_price != 0:
+            if ticker['last'] > self._max_price:
+                self.log_on_refresh(logger.info, f"Removed {ticker['symbol']} from whitelist, "
+                                                 f"because last price > {self._max_price:.8f}")
+                return False
+
         return True