[5.2.x] Refs #35515 -- Fixed shell command verbose output when auto-importing 0 or 1 object.

Co-authored-by: Salvo Polizzi <salvopolizzi03@gmail.com>

Backport of 0597e8ad1e55b565292ead732916aa0e39bdf37b from main.

django/core/management/commands/shell.py

@@ -129,10 +129,13 @@ class Command(BaseCommand):
             return namespace
 
         amount = len(namespace)
-        msg = f"{amount} objects imported automatically"
+        objects_str = "objects" if amount != 1 else "object"
+        msg = f"{amount} {objects_str} imported automatically"
 
         if verbosity < 2:
-            self.stdout.write(f"{msg} (use -v 2 for details).", self.style.SUCCESS)
+            if amount:
+                msg += " (use -v 2 for details)"
+            self.stdout.write(f"{msg}.", self.style.SUCCESS)
             return namespace
 
         imports_by_module = defaultdict(list)
@@ -163,9 +166,12 @@ class Command(BaseCommand):
         else:
             import_string = isort.code(import_string)
 
-        self.stdout.write(
-            f"{msg}, including:\n\n{import_string}", self.style.SUCCESS, ending="\n\n"
-        )
+        if import_string:
+            msg = f"{msg}, including:\n\n{import_string}"
+        else:
+            msg = f"{msg}."
+
+        self.stdout.write(msg, self.style.SUCCESS, ending="\n\n")
 
         return namespace
 

tests/shell/tests.py

@@ -7,7 +7,7 @@ from django.contrib.auth.models import Group, Permission, User
 from django.contrib.contenttypes.models import ContentType
 from django.core.management import CommandError, call_command
 from django.core.management.commands import shell
-from django.db import models
+from django.db import connection, models
 from django.test import SimpleTestCase
 from django.test.utils import (
     captured_stdin,
@@ -275,6 +275,44 @@ class ShellCommandAutoImportsTestCase(SimpleTestCase):
             "  from shell.models import Phone, Marker",
         )
 
+    def test_message_with_stdout_one_object(self):
+        class TestCommand(shell.Command):
+            def get_namespace(self):
+                return {"connection": connection}
+
+        with captured_stdout() as stdout:
+            TestCommand().get_and_report_namespace(verbosity=2)
+
+        cases = {
+            0: "",
+            1: "1 object imported automatically (use -v 2 for details).",
+            2: (
+                "1 object imported automatically, including:\n\n"
+                "  from django.utils.connection import connection"
+            ),
+        }
+        for verbosity, expected in cases.items():
+            with self.subTest(verbosity=verbosity):
+                with captured_stdout() as stdout:
+                    TestCommand().get_and_report_namespace(verbosity=verbosity)
+                    self.assertEqual(stdout.getvalue().strip(), expected)
+
+    def test_message_with_stdout_zero_objects(self):
+        class TestCommand(shell.Command):
+            def get_namespace(self):
+                return {}
+
+        cases = {
+            0: "",
+            1: "0 objects imported automatically.",
+            2: "0 objects imported automatically.",
+        }
+        for verbosity, expected in cases.items():
+            with self.subTest(verbosity=verbosity):
+                with captured_stdout() as stdout:
+                    TestCommand().get_and_report_namespace(verbosity=verbosity)
+                    self.assertEqual(stdout.getvalue().strip(), expected)
+
     @override_settings(INSTALLED_APPS=["shell", "django.contrib.contenttypes"])
     def test_message_with_stdout_listing_objects_with_isort(self):
         sorted_imports = (