diff --git a/changelogs/fragments/code-cleanup.yml b/changelogs/fragments/code-cleanup.yml
index a7a68418b7a..2309daab50b 100644
--- a/changelogs/fragments/code-cleanup.yml
+++ b/changelogs/fragments/code-cleanup.yml
@@ -4,3 +4,5 @@ minor_changes:
   - unicode utils - Fix ``__all__`` which was incorrectly declared as a string instead of a tuple.
   - connection base - Avoid using deprecated ``@abstractproperty`` decorator.
   - user module - Remove unused code.
+  - cache base - More efficient string splitting.
+  - ansible-test - More efficient string splitting.
diff --git a/lib/ansible/plugins/cache/__init__.py b/lib/ansible/plugins/cache/__init__.py
index f164acee7b2..bd023a5c348 100644
--- a/lib/ansible/plugins/cache/__init__.py
+++ b/lib/ansible/plugins/cache/__init__.py
@@ -47,7 +47,7 @@ class BaseCacheModule(AnsiblePlugin):
         if not hasattr(self, '_load_name'):
             display.deprecated('Rather than importing custom CacheModules directly, use ansible.plugins.loader.cache_loader',
                                version='2.14', collection_name='ansible.builtin')
-            self._load_name = self.__module__.split('.')[-1]
+            self._load_name = self.__module__.rsplit('.', 1)[-1]
             self._load_name = resource_from_fqcr(self.__module__)
         super(BaseCacheModule, self).__init__()
         self.set_options(var_options=args, direct=kwargs)
diff --git a/test/lib/ansible_test/_internal/commands/integration/__init__.py b/test/lib/ansible_test/_internal/commands/integration/__init__.py
index 84ea1874d81..75a504bc1a8 100644
--- a/test/lib/ansible_test/_internal/commands/integration/__init__.py
+++ b/test/lib/ansible_test/_internal/commands/integration/__init__.py
@@ -1130,7 +1130,7 @@ class EnvironmentDescription:
 
         versions = ['']
         versions += SUPPORTED_PYTHON_VERSIONS
-        versions += list(set(v.split('.')[0] for v in SUPPORTED_PYTHON_VERSIONS))
+        versions += list(set(v.split('.', 1)[0] for v in SUPPORTED_PYTHON_VERSIONS))
 
         version_check = os.path.join(ANSIBLE_TEST_DATA_ROOT, 'versions.py')
         python_paths = dict((v, find_executable('python%s' % v, required=False)) for v in sorted(versions))
diff --git a/test/lib/ansible_test/_internal/commands/integration/cloud/__init__.py b/test/lib/ansible_test/_internal/commands/integration/cloud/__init__.py
index 5c9c30de417..8d4bbec1ea2 100644
--- a/test/lib/ansible_test/_internal/commands/integration/cloud/__init__.py
+++ b/test/lib/ansible_test/_internal/commands/integration/cloud/__init__.py
@@ -173,7 +173,7 @@ class CloudBase(ABC):
 
     def __init__(self, args):  # type: (IntegrationConfig) -> None
         self.args = args
-        self.platform = self.__module__.split('.')[-1]
+        self.platform = self.__module__.rsplit('.', 1)[-1]
 
         def config_callback(files):  # type: (t.List[t.Tuple[str, str]]) -> None
             """Add the config file to the payload file list."""
diff --git a/test/units/executor/test_task_executor.py b/test/units/executor/test_task_executor.py
index b27faf9b616..8c01b339c10 100644
--- a/test/units/executor/test_task_executor.py
+++ b/test/units/executor/test_task_executor.py
@@ -246,7 +246,7 @@ class TestTaskExecutor(unittest.TestCase):
         mock_connection = MagicMock()
         mock_templar = MagicMock()
         action = 'namespace.netconf_suffix'
-        module_prefix = action.split('_')[0]
+        module_prefix = action.split('_', 1)[0]
         te._task.action = action
 
         handler = te._get_action_handler(mock_connection, mock_templar)
@@ -281,7 +281,7 @@ class TestTaskExecutor(unittest.TestCase):
         mock_connection = MagicMock()
         mock_templar = MagicMock()
         action = 'namespace.prefix_suffix'
-        module_prefix = action.split('_')[0]
+        module_prefix = action.split('_', 1)[0]
         te._task.action = action
         handler = te._get_action_handler(mock_connection, mock_templar)