diff --git a/src/calng/AgipdCorrection.py b/src/calng/AgipdCorrection.py
index 10da69ce2a7794094edbc804f77b472f27e324d6..adf8866e7d8e28198ad99711d400d23b61ce70b5 100644
--- a/src/calng/AgipdCorrection.py
+++ b/src/calng/AgipdCorrection.py
@@ -5,20 +5,20 @@ from karabo.bound import (
     BOOL_ELEMENT,
     FLOAT_ELEMENT,
     KARABO_CLASSINFO,
+    NDARRAY_ELEMENT,
     NODE_ELEMENT,
+    OUTPUT_CHANNEL,
     STRING_ELEMENT,
     VECTOR_STRING_ELEMENT,
     Schema,
-    NDARRAY_ELEMENT,
-    OUTPUT_CHANNEL,
 )
 from karabo.common.states import State
 
+from . import shmem_utils
 from ._version import version as deviceVersion
 from .agipd_gpu import AgipdGainMode, AgipdGpuRunner, BadPixelValues, CorrectionFlags
 from .base_correction import BaseCorrection, add_correction_step_schema
 from .calcat_utils import AgipdCalcatFriend, AgipdConstants
-from . import shmem_utils
 
 
 @KARABO_CLASSINFO("AgipdCorrection", deviceVersion)
diff --git a/src/calng/DsscCorrection.py b/src/calng/DsscCorrection.py
index ae9f4f33c8ea4a73af96183dbe8ceb29a1103ef8..7bd0b665becdfb3eda6e12391810b3162818e6a2 100644
--- a/src/calng/DsscCorrection.py
+++ b/src/calng/DsscCorrection.py
@@ -7,7 +7,7 @@ from karabo.common.states import State
 from ._version import version as deviceVersion
 from .base_correction import BaseCorrection, add_correction_step_schema
 from .calcat_utils import DsscCalcatFriend, DsscConstants
-from .dssc_gpu import DsscGpuRunner, CorrectionFlags
+from .dssc_gpu import CorrectionFlags, DsscGpuRunner
 
 
 @KARABO_CLASSINFO("DsscCorrection", deviceVersion)
diff --git a/src/calng/ModuleStacker.py b/src/calng/ModuleStacker.py
index 967e080d42989835cf682fc8e202753bcf0af869..3490a705de34c17381670977295b0eb1baa4356d 100644
--- a/src/calng/ModuleStacker.py
+++ b/src/calng/ModuleStacker.py
@@ -1,10 +1,10 @@
 import numpy as np
 from karabo.bound import (
-    ChannelMetaData,
     FLOAT_ELEMENT,
     KARABO_CLASSINFO,
     NODE_ELEMENT,
     STRING_ELEMENT,
+    ChannelMetaData,
     Epochstamp,
     Hash,
     MetricPrefix,
diff --git a/src/calng/ShmemToZMQ.py b/src/calng/ShmemToZMQ.py
index 1fcdaa4f09ea414c77ba37a0c7553db768dfbed6..b31cbccde2d94a8d97e4bd1218945e8250283a18 100644
--- a/src/calng/ShmemToZMQ.py
+++ b/src/calng/ShmemToZMQ.py
@@ -1,11 +1,9 @@
-import threading
 from time import time
 
 from karabo.bound import KARABO_CLASSINFO
 from PipeToZeroMQ import PipeToZeroMQ, conversion, device_schema
 
 from . import shmem_utils
-
 from ._version import version as deviceVersion
 
 
diff --git a/src/calng/base_correction.py b/src/calng/base_correction.py
index 40f633f29db28348c3586227e189973591d5e162..2b072927a58f924b889f2c601a4d3c394da63d1e 100644
--- a/src/calng/base_correction.py
+++ b/src/calng/base_correction.py
@@ -36,7 +36,6 @@ from karabo.common.states import State
 from . import scenes, shmem_utils, utils
 from ._version import version as deviceVersion
 
-
 PROCESSING_STATE_TIMEOUT = 10
 
 
diff --git a/src/calng/scenes.py b/src/calng/scenes.py
index 8f6f3aabd500a4072de78de8fa279e0579310a5c..efc14e04756497d0f73d5ad79a5279961dc384ab 100644
--- a/src/calng/scenes.py
+++ b/src/calng/scenes.py
@@ -12,11 +12,11 @@ from karabo.common.scenemodel.api import (
     DoubleLineEditModel,
     EvaluatorModel,
     IntLineEditModel,
-    LineEditModel,
     LabelModel,
+    LineEditModel,
+    RectangleModel,
     SceneModel,
     write_scene,
-    RectangleModel,
 )
 
 BASE_INC = 30
@@ -439,7 +439,7 @@ class CompactCorrectionDeviceOverview:
             keys=[f"{device_id}.availableScenes"],
             target="overview",
             width=5 * BASE_INC,
-            height=BASE_INC
+            height=BASE_INC,
         )
         self.status = DisplayStateColorModel(
             show_string=True,