Fixed #32153 -- Fixed management commands when using required list options.

Thanks Mark Gajdosik for the report and initial patch.

django/core/management/__init__.py

@@ -120,7 +120,12 @@ def call_command(command_name, *args, **options):
         for s_opt in parser._actions if s_opt.option_strings
     }
     arg_options = {opt_mapping.get(key, key): value for key, value in options.items()}
-    parse_args = [str(a) for a in args]
+    parse_args = []
+    for arg in args:
+        if isinstance(arg, (list, tuple)):
+            parse_args += map(str, arg)
+        else:
+            parse_args.append(str(arg))
 
     def get_actions(parser):
         # Parser actions and actions from sub-parser choices.
@@ -139,15 +144,19 @@ def call_command(command_name, *args, **options):
     }
     # Any required arguments which are passed in via **options must be passed
     # to parse_args().
-    parse_args += [
-        min(opt.option_strings)
-        if isinstance(opt, (_AppendConstAction, _CountAction, _StoreConstAction))
-        else '{}={}'.format(min(opt.option_strings), arg_options[opt.dest])
-        for opt in parser_actions if (
+    for opt in parser_actions:
+        if (
             opt.dest in options and
             (opt.required or opt in mutually_exclusive_required_options)
-        )
-    ]
+        ):
+            parse_args.append(min(opt.option_strings))
+            if isinstance(opt, (_AppendConstAction, _CountAction, _StoreConstAction)):
+                continue
+            value = arg_options[opt.dest]
+            if isinstance(value, (list, tuple)):
+                parse_args += map(str, value)
+            else:
+                parse_args.append(str(value))
     defaults = parser.parse_args(args=parse_args)
     defaults = dict(defaults._get_kwargs(), **arg_options)
     # Raise an error if any unknown options were passed.

tests/user_commands/management/commands/mutually_exclusive_required.py

@@ -7,6 +7,7 @@ class Command(BaseCommand):
         group = parser.add_mutually_exclusive_group(required=True)
         group.add_argument('--foo-id', type=int, nargs='?', default=None)
         group.add_argument('--foo-name', type=str, nargs='?', default=None)
+        group.add_argument('--foo-list', type=int, nargs='+')
         group.add_argument('--append_const', action='append_const', const=42)
         group.add_argument('--const', action='store_const', const=31)
         group.add_argument('--count', action='count')

tests/user_commands/management/commands/required_list_option.py

@@ -0,0 +1,10 @@
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    def add_arguments(self, parser):
+        parser.add_argument('--foo-list', nargs='+', type=int, required=True)
+
+    def handle(self, *args, **options):
+        for option, value in options.items():
+            self.stdout.write('%s=%s' % (option, value))

tests/user_commands/tests.py

@@ -244,8 +244,9 @@ class CommandTests(SimpleTestCase):
         management.call_command('mutually_exclusive_required', foo_name='foo', stdout=out)
         self.assertIn('foo_name', out.getvalue())
         msg = (
-            'Error: one of the arguments --foo-id --foo-name --append_const '
-            '--const --count --flag_false --flag_true is required'
+            'Error: one of the arguments --foo-id --foo-name --foo-list '
+            '--append_const --const --count --flag_false --flag_true is '
+            'required'
         )
         with self.assertRaisesMessage(CommandError, msg):
             management.call_command('mutually_exclusive_required', stdout=out)
@@ -275,6 +276,22 @@ class CommandTests(SimpleTestCase):
                 )
                 self.assertIn(expected_output, out.getvalue())
 
+    def test_required_list_option(self):
+        tests = [
+            (('--foo-list', [1, 2]), {}),
+            ((), {'foo_list': [1, 2]}),
+        ]
+        for command in ['mutually_exclusive_required', 'required_list_option']:
+            for args, kwargs in tests:
+                with self.subTest(command=command, args=args, kwargs=kwargs):
+                    out = StringIO()
+                    management.call_command(
+                        command,
+                        *args,
+                        **{**kwargs, 'stdout': out},
+                    )
+                    self.assertIn('foo_list=[1, 2]', out.getvalue())
+
     def test_required_const_options(self):
         args = {
             'append_const': [42],