Default load minimal config

freqtrade/configuration/configuration.py

@@ -52,6 +52,9 @@ class Configuration(object):
         # Keep this method as staticmethod, so it can be used from interactive environments
         config: Dict[str, Any] = {}
 
+        if not files:
+            return constants.MINIMAL_CONFIG
+
         # We expect here a list of config filenames
         for path in files:
             logger.info(f'Using config: {path} ...')
@@ -276,6 +279,16 @@ class Configuration(object):
         self._args_to_config(config, argname='trade_source',
                              logstring='Using trades from: {}')
 
+        self._args_to_config(config, argname='timeframes',
+                             logstring='timeframes --timeframes: {}')
+
+        self._args_to_config(config, argname='days',
+                             logstring='Detected --days: {}')
+
+        if "exchange" in self.args and self.args.exchange:
+            config['exchange']['name'] = self.args.exchange
+            logger.info(f"Using exchange {config['exchange']['name']}")
+
     def _process_runmode(self, config: Dict[str, Any]) -> None:
 
         if not self.runmode:

freqtrade/constants.py

@@ -38,6 +38,20 @@ SUPPORTED_FIAT = [
     "BTC", "XBT", "ETH", "XRP", "LTC", "BCH", "USDT"
 ]
 
+MINIMAL_CONFIG = {
+    'stake_currency': '',
+    'dry_run': True,
+    'exchange': {
+        'name': '',
+        'key': '',
+        'secret': '',
+        'pair_whitelist': [],
+        'ccxt_async_config': {
+            'enableRateLimit': True,
+        }
+    }
+}
+
 # Required json-schema for user specified config
 CONF_SCHEMA = {
     'type': 'object',