diff --git a/src/nomad_simulations/schema_packages/utils/utils.py b/src/nomad_simulations/schema_packages/utils/utils.py
index 2e246a4e..ac5ee561 100644
--- a/src/nomad_simulations/schema_packages/utils/utils.py
+++ b/src/nomad_simulations/schema_packages/utils/utils.py
@@ -112,7 +112,8 @@ def multiplicity(self):
     @property
     def degeneracy(self):
         return factorial(int(self.multiplicity)) / (
-            factorial(int(self.multiplicity - self.occupation)) * factorial(self.occupation)
+            factorial(int(self.multiplicity - self.occupation))
+            * factorial(self.occupation)
         )
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index c4a5a798..097298c2 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -23,6 +23,7 @@
 import pytest
 from nomad.datamodel import EntryArchive
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.atoms_state import AtomsState, OrbitalsState
 from nomad_simulations.schema_packages.general import Simulation
 from nomad_simulations.schema_packages.model_method import ModelMethod
diff --git a/tests/test_atoms_state.py b/tests/test_atoms_state.py
index 65a1e3d0..dd2aa70c 100644
--- a/tests/test_atoms_state.py
+++ b/tests/test_atoms_state.py
@@ -22,6 +22,7 @@
 import pytest
 from nomad.datamodel import EntryArchive
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.atoms_state import (
     AtomsState,
     CoreHole,
diff --git a/tests/test_band_gap.py b/tests/test_band_gap.py
index b47abe1b..8d8a6b53 100644
--- a/tests/test_band_gap.py
+++ b/tests/test_band_gap.py
@@ -22,6 +22,7 @@
 import pytest
 from nomad.datamodel import EntryArchive
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.properties import ElectronicBandGap
 from nomad_simulations.schema_packages.variables import Temperature
 
diff --git a/tests/test_band_structure.py b/tests/test_band_structure.py
index 4dd72ecd..1e81aab5 100644
--- a/tests/test_band_structure.py
+++ b/tests/test_band_structure.py
@@ -21,6 +21,7 @@
 import numpy as np
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.properties import ElectronicEigenvalues
 
 from . import logger
diff --git a/tests/test_fermi_surface.py b/tests/test_fermi_surface.py
index dde4ce1f..05c7206b 100644
--- a/tests/test_fermi_surface.py
+++ b/tests/test_fermi_surface.py
@@ -19,6 +19,7 @@
 from typing import Optional
 
 import pytest
+
 from nomad_simulations.schema_packages.properties import FermiSurface
 
 
diff --git a/tests/test_general.py b/tests/test_general.py
index e722e03e..06a360c9 100644
--- a/tests/test_general.py
+++ b/tests/test_general.py
@@ -19,6 +19,7 @@
 import numpy as np
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.general import Simulation
 from nomad_simulations.schema_packages.model_system import (
     AtomicCell,
diff --git a/tests/test_hopping_matrix.py b/tests/test_hopping_matrix.py
index cfe6ada2..b7cf43d7 100644
--- a/tests/test_hopping_matrix.py
+++ b/tests/test_hopping_matrix.py
@@ -19,6 +19,7 @@
 from typing import Optional
 
 import pytest
+
 from nomad_simulations.schema_packages.properties import (
     CrystalFieldSplitting,
     HoppingMatrix,
diff --git a/tests/test_model_method.py b/tests/test_model_method.py
index b66c5e25..7e51e22d 100644
--- a/tests/test_model_method.py
+++ b/tests/test_model_method.py
@@ -20,6 +20,7 @@
 
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.atoms_state import AtomsState, OrbitalsState
 from nomad_simulations.schema_packages.general import Simulation
 from nomad_simulations.schema_packages.model_method import (
diff --git a/tests/test_model_system.py b/tests/test_model_system.py
index ecb67a76..6ead47e8 100644
--- a/tests/test_model_system.py
+++ b/tests/test_model_system.py
@@ -21,6 +21,7 @@
 import numpy as np
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.model_system import (
     ChemicalFormula,
     ModelSystem,
diff --git a/tests/test_numerical_settings.py b/tests/test_numerical_settings.py
index aab071ce..70ab30da 100644
--- a/tests/test_numerical_settings.py
+++ b/tests/test_numerical_settings.py
@@ -22,6 +22,7 @@
 import pytest
 from nomad.datamodel import EntryArchive
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.numerical_settings import (
     KLinePath,
     KMesh,
diff --git a/tests/test_outputs.py b/tests/test_outputs.py
index 671e060a..9aaee9c4 100644
--- a/tests/test_outputs.py
+++ b/tests/test_outputs.py
@@ -20,6 +20,7 @@
 
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.model_method import ModelMethod
 from nomad_simulations.schema_packages.model_system import ModelSystem
 from nomad_simulations.schema_packages.numerical_settings import SelfConsistency
diff --git a/tests/test_permittivity.py b/tests/test_permittivity.py
index 9cb58fbc..f6955f97 100644
--- a/tests/test_permittivity.py
+++ b/tests/test_permittivity.py
@@ -20,6 +20,7 @@
 
 import numpy as np
 import pytest
+
 from nomad_simulations.schema_packages.properties import Permittivity
 from nomad_simulations.schema_packages.variables import Frequency, KMesh, Variables
 
diff --git a/tests/test_physical_properties.py b/tests/test_physical_properties.py
index 12191221..b9e9e1bf 100644
--- a/tests/test_physical_properties.py
+++ b/tests/test_physical_properties.py
@@ -23,6 +23,7 @@
 from nomad.datamodel import EntryArchive
 from nomad.metainfo import Quantity
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.physical_property import (
     PhysicalProperty,
     validate_quantity_wrt_value,
diff --git a/tests/test_spectral_profile.py b/tests/test_spectral_profile.py
index 003bd029..4184bbb7 100644
--- a/tests/test_spectral_profile.py
+++ b/tests/test_spectral_profile.py
@@ -22,6 +22,7 @@
 import pytest
 from nomad.datamodel import EntryArchive
 from nomad.units import ureg
+
 from nomad_simulations.schema_packages.atoms_state import AtomsState
 from nomad_simulations.schema_packages.general import Simulation
 from nomad_simulations.schema_packages.model_system import AtomicCell, ModelSystem
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 8cf7512a..3d3e69cf 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -17,6 +17,7 @@
 #
 
 import pytest
+
 from nomad_simulations.schema_packages.model_system import (
     AtomicCell,
     ModelSystem,
diff --git a/tests/test_variables.py b/tests/test_variables.py
index 2fd63a00..c64faf91 100644
--- a/tests/test_variables.py
+++ b/tests/test_variables.py
@@ -18,6 +18,7 @@
 
 import pytest
 from nomad.datamodel import EntryArchive
+
 from nomad_simulations.schema_packages.variables import Variables
 
 from . import logger