use deepcopy

freqtrade/main.py

@@ -6,6 +6,7 @@ import traceback
 from datetime import datetime
 from typing import Dict, Optional
 
+import copy
 from jsonschema import validate
 
 from freqtrade import exchange, persistence, __version__
@@ -88,11 +89,7 @@ def execute_sell(trade: Trade, current_rate: float) -> None:
     # Get available balance
     currency = trade.pair.split('_')[1]
     balance = exchange.get_balance(currency)
-    whitelist = _CONF[trade.exchange.name.lower()]['pair_whitelist']
-
     profit = trade.exec_sell_order(current_rate, balance)
-    if trade.pair not in whitelist:
-        whitelist.append(trade.pair)
     message = '*{}:* Selling [{}]({}) at rate `{:f} (profit: {}%)`'.format(
         trade.exchange.name,
         trade.pair.replace('_', '/'),
@@ -161,7 +158,7 @@ def create_trade(stake_amount: float, _exchange: exchange.Exchange) -> Optional[
     :param _exchange: exchange to use
     """
     logger.info('Creating new trade with stake_amount: %f ...', stake_amount)
-    whitelist = _CONF[_exchange.name.lower()]['pair_whitelist']
+    whitelist = copy.deepcopy(_CONF[_exchange.name.lower()]['pair_whitelist'])
     # Check if stake_amount is fulfilled
     if exchange.get_balance(_CONF['stake_currency']) < stake_amount:
         raise ValueError(
@@ -169,11 +166,7 @@ def create_trade(stake_amount: float, _exchange: exchange.Exchange) -> Optional[
         )
 
     # Remove currently opened and latest pairs from whitelist
-    trades = Trade.query.filter(Trade.is_open.is_(True)).all()
-    latest_trade = Trade.query.filter(Trade.is_open.is_(False)).order_by(Trade.id.desc()).first()
-    if latest_trade:
-        trades.append(latest_trade)
-    for trade in trades:
+    for trade in Trade.query.filter(Trade.is_open.is_(True)).all():
         if trade.pair in whitelist:
             whitelist.remove(trade.pair)
             logger.debug('Ignoring %s in pair whitelist', trade.pair)