diff --git a/src/python_testing/TC_DEM_2_3.py b/src/python_testing/TC_DEM_2_3.py
index dd7de732e69f7c..58d21d031477a4 100644
--- a/src/python_testing/TC_DEM_2_3.py
+++ b/src/python_testing/TC_DEM_2_3.py
@@ -20,9 +20,9 @@
 import chip.clusters as Clusters
 from chip.clusters.Types import NullValue
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_4.py b/src/python_testing/TC_DEM_2_4.py
index 97e76195e6115e..3065afd563c9e4 100644
--- a/src/python_testing/TC_DEM_2_4.py
+++ b/src/python_testing/TC_DEM_2_4.py
@@ -15,15 +15,15 @@
 #    limitations under the License.
 
 
-import time
 import logging
+import time
 
 import chip.clusters as Clusters
 from chip.clusters.Types import NullValue
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_5.py b/src/python_testing/TC_DEM_2_5.py
index e57b304fe852b3..90c2c311020f6a 100644
--- a/src/python_testing/TC_DEM_2_5.py
+++ b/src/python_testing/TC_DEM_2_5.py
@@ -21,9 +21,9 @@
 
 import chip.clusters as Clusters
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_6.py b/src/python_testing/TC_DEM_2_6.py
index 6528ecedcaf2ce..d0016009c7d50a 100644
--- a/src/python_testing/TC_DEM_2_6.py
+++ b/src/python_testing/TC_DEM_2_6.py
@@ -21,9 +21,9 @@
 
 import chip.clusters as Clusters
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_7.py b/src/python_testing/TC_DEM_2_7.py
index 6def94ccc0f37a..9971a2e89b6610 100644
--- a/src/python_testing/TC_DEM_2_7.py
+++ b/src/python_testing/TC_DEM_2_7.py
@@ -17,14 +17,14 @@
 """Define Matter test case TC_DEM_2_7."""
 
 
-import logging
 import datetime
+import logging
 
 import chip.clusters as Clusters
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_8.py b/src/python_testing/TC_DEM_2_8.py
index 39860b6da11abb..52042e39ae5a94 100644
--- a/src/python_testing/TC_DEM_2_8.py
+++ b/src/python_testing/TC_DEM_2_8.py
@@ -17,14 +17,14 @@
 """Define Matter test case TC_DEM_2_8."""
 
 
-import logging
 import datetime
+import logging
 
 import chip.clusters as Clusters
 from chip.interaction_model import Status
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)
 
diff --git a/src/python_testing/TC_DEM_2_9.py b/src/python_testing/TC_DEM_2_9.py
index cdae285c6c8a0f..5ea7ab8829d0cc 100644
--- a/src/python_testing/TC_DEM_2_9.py
+++ b/src/python_testing/TC_DEM_2_9.py
@@ -20,9 +20,9 @@
 import logging
 
 import chip.clusters as Clusters
+from DEMTestBase import DEMTestBase
 from matter_testing_support import EventChangeCallback, MatterBaseTest, TestStep, async_test_body, default_matter_test_main
 from mobly import asserts
-from DEMTestBase import DEMTestBase
 
 logger = logging.getLogger(__name__)