Allow --base and --quote be lists of currencies

freqtrade/configuration/arguments.py

@@ -35,7 +35,7 @@ ARGS_LIST_EXCHANGES = ["print_one_column", "list_exchanges_all"]
 ARGS_LIST_TIMEFRAMES = ["exchange", "print_one_column"]
 
 ARGS_LIST_PAIRS = ["exchange", "print_list", "list_pairs_print_json", "print_one_column",
-                   "print_csv", "base_currency", "quote_currency", "active_only"]
+                   "print_csv", "base_currencies", "quote_currencies", "active_only"]
 
 ARGS_CREATE_USERDIR = ["user_data_dir"]
 

freqtrade/configuration/cli_options.py

@@ -273,13 +273,15 @@ AVAILABLE_CLI_OPTIONS = {
         help='Print exchange pair or market data in the csv format.',
         action='store_true',
     ),
-    "quote_currency": Arg(
-        '--quote-currency',
-        help='Select quote currency.',
+    "quote_currencies": Arg(
+        '--quote',
+        help='Specify quote currency(-ies). Space-separated list.',
+        nargs='+',
     ),
-    "base_currency": Arg(
-        '--base-currency',
-        help='Select base currency.',
+    "base_currencies": Arg(
+        '--base',
+        help='Specify base currency(-ies). Space-separated list.',
+        nargs='+',
     ),
     "active_only": Arg(
         '--active-only',