fix --stake-amount parameter

freqtrade/commands/cli_options.py

@@ -133,7 +133,6 @@ AVAILABLE_CLI_OPTIONS = {
     "stake_amount": Arg(
         '--stake-amount',
         help='Override the value of the `stake_amount` configuration setting.',
-        type=float,
     ),
     # Backtesting
     "position_stacking": Arg(

freqtrade/configuration/configuration.py

@@ -229,6 +229,13 @@ class Configuration:
         elif config['runmode'] in NON_UTIL_MODES:
             logger.info('Using max_open_trades: %s ...', config.get('max_open_trades'))
 
+        if self.args.get('stake_amount', None):
+            # Convert explicitly to float to support CLI argument for both unlimited and value
+            try:
+                self.args['stake_amount'] = float(self.args['stake_amount'])
+            except ValueError:
+                pass
+
         self._args_to_config(config, argname='stake_amount',
                              logstring='Parameter --stake-amount detected, '
                              'overriding stake_amount to: {} ...')

tests/test_configuration.py

@@ -430,7 +430,8 @@ def test_setup_configuration_with_arguments(mocker, default_conf, caplog) -> Non
         '--enable-position-stacking',
         '--disable-max-market-positions',
         '--timerange', ':100',
-        '--export', '/bar/foo'
+        '--export', '/bar/foo',
+        '--stake-amount', 'unlimited'
     ]
 
     args = Arguments(arglist).get_parsed_arg()
@@ -463,6 +464,8 @@ def test_setup_configuration_with_arguments(mocker, default_conf, caplog) -> Non
 
     assert 'export' in config
     assert log_has('Parameter --export detected: {} ...'.format(config['export']), caplog)
+    assert 'stake_amount' in config
+    assert config['stake_amount'] == 'unlimited'
 
 
 def test_setup_configuration_with_stratlist(mocker, default_conf, caplog) -> None: