Change backtesting-analysis options to space separated lists

freqtrade/commands/cli_options.py

@@ -622,28 +622,29 @@ AVAILABLE_CLI_OPTIONS = {
               "2: by enter_tag and exit_tag, "
               "3: by pair and enter_tag, "
               "4: by pair, enter_ and exit_tag (this can get quite large)"),
-        nargs='?',
-        default="0,1,2",
+        nargs='+',
+        default=['0', '1', '2'],
+        choices=['0', '1', '2', '3', '4'],
     ),
     "enter_reason_list": Arg(
         "--enter-reason-list",
         help=("Comma separated list of entry signals to analyse. Default: all. "
               "e.g. 'entry_tag_a,entry_tag_b'"),
-        nargs='?',
-        default='all',
+        nargs='+',
+        default=['all'],
     ),
     "exit_reason_list": Arg(
         "--exit-reason-list",
         help=("Comma separated list of exit signals to analyse. Default: all. "
               "e.g. 'exit_tag_a,roi,stop_loss,trailing_stop_loss'"),
-        nargs='?',
-        default='all',
+        nargs='+',
+        default=['all'],
     ),
     "indicator_list": Arg(
         "--indicator-list",
         help=("Comma separated list of indicators to analyse. "
               "e.g. 'close,rsi,bb_lowerband,profit_abs'"),
-        nargs='?',
-        default='',
+        nargs='+',
+        default=[],
     ),
 }