diff --git a/hypervehicle/components/swept.py b/hypervehicle/components/swept.py
index 242bb91..07ae494 100644
--- a/hypervehicle/components/swept.py
+++ b/hypervehicle/components/swept.py
@@ -83,7 +83,6 @@ def __init__(
         )
 
     def generate_patches(self):
-
         self.patches["swept_patch_north"] = SweptPatchMultiFace(
             cross_sections=self.cross_sections,
             sweep_axis=self.sweep_axis,
diff --git a/hypervehicle/geometry.py b/hypervehicle/geometry.py
index b397579..b12c45b 100644
--- a/hypervehicle/geometry.py
+++ b/hypervehicle/geometry.py
@@ -735,7 +735,6 @@ def __repr__(self):
         return "Swept Patch Multi Face"
 
     def __call__(self, r, s) -> Vector3:
-
         if callable(self._method_to_call):
             s_dash = self._method_to_call(s)
         else:
diff --git a/hypervehicle/utilities.py b/hypervehicle/utilities.py
index 0e9e443..46b3278 100644
--- a/hypervehicle/utilities.py
+++ b/hypervehicle/utilities.py
@@ -127,7 +127,6 @@ def create_cells(
     cell_ids = []
     for i in range(ni):
         for j in range(nj):
-
             ############################################################
             ### Amir - adding ni != nj capability for tagging sub_patchs
 
@@ -162,6 +161,7 @@ def create_cells(
 
     return (vertices, cell_ids)
 
+
 def default_vertex_func(lb, ub, steps, spacing=1.0):
     span = ub - lb
     dx = 1.0 / (steps - 1)