fix handling timeframes

freqtrade/arguments.py

@@ -484,7 +484,6 @@ class Arguments(object):
                   Default: %(default)s.',
             choices=['1m', '3m', '5m', '15m', '30m', '1h', '2h', '4h',
                      '6h', '8h', '12h', '1d', '3d', '1w'],
-            default=['1m', '5m'],
             nargs='+',
             dest='timeframes',
         )

scripts/download_backtest_data.py

@@ -50,8 +50,10 @@ if args.config:
 
     pairs = config['exchange']['pair_whitelist']
 
-    # Don't fail if ticker_interval is not in the configuration
-    timeframes = [config.get('ticker_interval')]
+    if config.get('ticker_interval'):
+        timeframes = args.timeframes or [config.get('ticker_interval')]
+    else:
+        timeframes = args.timeframes or ['1m', '5m']
 
 else:
     config = {
@@ -68,8 +70,7 @@ else:
             }
         }
     }
-
-timeframes = args.timeframes
+    timeframes = args.timeframes or ['1m', '5m']
 
 configuration._load_logging_config(config)