Reformatted with black 24.2.0

docs/assets/ttt/ttt-23-t-24-curved_support.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby challenge 23-T-24 CURVED SUPPORT
 """
+
 from math import sin, cos, tan, radians
 from build123d import *
 from ocp_vscode import *

docs/assets/ttt/ttt-ppp0101.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-01 Bearing Bracket
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0102.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-02 Post Cap
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0103.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-03 C Clamp Base
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0104.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-04 Angle Bracket
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0105.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-05 Paste Sleeve
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0106.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-06 Bearing Jig
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0107.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-07 Flanged Hub
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0108.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-08 Tie Plate
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/assets/ttt/ttt-ppp0109.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-09 Corner Tie
 """
+
 from math import sqrt
 from build123d import *
 from ocp_vscode import *

docs/assets/ttt/ttt-ppp0110.py

@@ -1,6 +1,7 @@
 """
 Too Tall Toby Party Pack 01-10 Light Cap
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/general_examples.py

@@ -26,6 +26,7 @@ license:
     See the License for the specific language governing permissions and
     limitations under the License.
 """
+
 from build123d import *
 
 

docs/general_examples_algebra.py

@@ -26,6 +26,7 @@ license:
     See the License for the specific language governing permissions and
     limitations under the License.
 """
+
 from build123d import *
 
 

docs/line_types.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from build123d import *
 
 exporter = ExportSVG(scale=1)

docs/selector_example.py

@@ -24,6 +24,7 @@ license:
     See the License for the specific language governing permissions and
     limitations under the License.
 """
+
 from build123d import *
 from ocp_vscode import *
 

docs/tutorial_joints.py

@@ -24,6 +24,7 @@ license:
     See the License for the specific language governing permissions and
     limitations under the License.
 """
+
 # [import]
 from build123d import *
 from ocp_vscode import *

src/build123d/_dev/scm_version.py

@@ -1,4 +1,5 @@
 """scm version"""
+
 import os.path as pth
 
 try:

src/build123d/build_line.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 from typing import Union

src/build123d/build_part.py

@@ -28,6 +28,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 from typing import Union

src/build123d/build_sketch.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 from typing import Union

src/build123d/drafting.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from dataclasses import dataclass
 from datetime import date
 from math import copysign, floor, gcd, log2, pi
@@ -177,6 +178,7 @@ class Draft:
             Defaults to 2.0.
 
     """
+
     # pylint: disable=too-many-instance-attributes
 
     # Class Attributes

src/build123d/exporters.py

@@ -26,7 +26,6 @@ license:
 
 """
 
-
 # pylint has trouble with the OCP imports
 # pylint: disable=no-name-in-module, import-error
 # pylint: disable=too-many-lines

src/build123d/importers.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 # pylint has trouble with the OCP imports
 # pylint: disable=no-name-in-module, import-error
 

src/build123d/joints.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 from math import inf

src/build123d/jupyter_tools.py

@@ -22,6 +22,7 @@ license:
     limitations under the License.
 
 """
+
 # pylint: disable=no-name-in-module
 from json import dumps
 from typing import Any, Dict, List
@@ -220,12 +221,14 @@ def display(shape: Any) -> Javascript:
     if not hasattr(shape, "wrapped"):  # Is a "Shape"
         raise ValueError(f"Type {type(shape)} is not supported")
 
-    payload.append({
+    payload.append(
+        {
             "shape": to_vtkpoly_string(shape),
             "color": DEFAULT_COLOR,
             "position": [0, 0, 0],
             "orientation": [0, 0, 0],
-    })
+        }
+    )
     code = TEMPLATE.format(data=dumps(payload), element="element", ratio=0.5)
 
     return Javascript(code)

src/build123d/mesher.py

@@ -78,6 +78,7 @@ license:
     See the License for the specific language governing permissions and
     limitations under the License.
 """
+
 # pylint has trouble with the OCP imports
 # pylint: disable=no-name-in-module, import-error
 import copy

src/build123d/objects_curve.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 import copy
@@ -814,12 +815,14 @@ class Spline(BaseLineObject):
 
         spline = Edge.make_spline(
             [p if isinstance(p, Vector) else Vector(*p) for p in spline_pts],
-            tangents=[
+            tangents=(
+                [
                     t * s if isinstance(t, Vector) else Vector(*t) * s
                     for t, s in zip(spline_tangents, scalars)
                 ]
                 if spline_tangents
-            else None,
+                else None
+            ),
             periodic=periodic,
             scale=tangent_scalars is None,
         )

src/build123d/objects_part.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 from math import radians, tan

src/build123d/objects_sketch.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 from __future__ import annotations
 
 import trianglesolver

src/build123d/operations_generic.py

@@ -26,6 +26,7 @@ license:
     limitations under the License.
 
 """
+
 import copy
 import logging
 from math import radians, tan, isclose

src/build123d/pack.py

@@ -16,9 +16,12 @@ from typing import Callable, Collection, Optional, cast
 
 from build123d import Location, Shape
 
-def _pack2d(objects: Collection[object],
+
+def _pack2d(
+    objects: Collection[object],
     width_fn: Callable[[object], float],
-            length_fn: Callable[[object], float]) -> Collection[tuple[float,float]]:
+    length_fn: Callable[[object], float],
+) -> Collection[tuple[float, float]]:
     """Takes an iterable of objects to pack into a square(ish) 2D
     arrangement, and return a list of (x,y) locations to place each to
     achieve the packing.
@@ -69,23 +72,40 @@ def _pack2d(objects: Collection[object],
 
     def grow_right(w, h):
         nonlocal root
-        root = _Node(used=True, x=0, y=0, w=root.w+w, h=root.h,
+        root = _Node(
-                    down=root, right=_Node(x=root.w, w=w, h=root.h))
+            used=True,
+            x=0,
+            y=0,
+            w=root.w + w,
+            h=root.h,
+            down=root,
+            right=_Node(x=root.w, w=w, h=root.h),
+        )
         node = find_node(root, w, h)
         assert node, "Failed to grow right! root: {root}, w: {w}, h: {h}"
         return split_node(node, w, h)
 
     def grow_down(w, h):
         nonlocal root
-        root = _Node(used=True, x=0, y=0, w=root.w, h=root.h+h,
+        root = _Node(
-                    down=_Node(y=root.h, w=root.w, h=h), right=root)
+            used=True,
+            x=0,
+            y=0,
+            w=root.w,
+            h=root.h + h,
+            down=_Node(y=root.h, w=root.w, h=h),
+            right=root,
+        )
         node = find_node(root, w, h)
         assert node, "Failed to grow down! root: {root}, w: {w}, h: {h}"
         return split_node(node, w, h)
 
     assert len(objects) > 0
-    sorted_objects = sorted([(i, width_fn(o), length_fn(o)) for (i, o) in enumerate(objects)],
+    sorted_objects = sorted(
-                     key=lambda d: min(d[1], d[2]), reverse=True)
+        [(i, width_fn(o), length_fn(o)) for (i, o) in enumerate(objects)],
+        key=lambda d: min(d[1], d[2]),
+        reverse=True,
+    )
     sorted_objects = sorted(sorted_objects, key=lambda d: max(d[1], d[2]), reverse=True)
     root = _Node(False, w=sorted_objects[0][1], h=sorted_objects[0][2])
     translations = []
@@ -98,13 +118,15 @@ def _pack2d(objects: Collection[object],
         translations.append((o[0], node.x, node.y))
     return [(t[1], t[2]) for t in sorted(translations, key=lambda t: t[0])]
 
+
 def pack(objects: Collection[Shape], padding: float) -> Collection[Shape]:
     """Pack objects in a squarish area in Plane.XY."""
     bounding_boxes = {o: o.bounding_box().size + (padding, padding) for o in objects}
     translations = _pack2d(
         objects,
         width_fn=lambda o: bounding_boxes[cast(Shape, o)].X,
-        length_fn=lambda o: bounding_boxes[cast(Shape, o)].Y)
+        length_fn=lambda o: bounding_boxes[cast(Shape, o)].Y,
+    )
     translated = [
         Location((t[0] - o.bounding_box().min.X, t[1] - o.bounding_box().min.Y, 0)) * o
         for (o, t) in zip(objects, translations)
@@ -118,8 +140,11 @@ def pack(objects: Collection[Shape], padding: float) -> Collection[Shape]:
         max_x = min(bb1.max.X, bb2.max.X)
         max_y = min(bb1.max.Y, bb2.max.Y)
         return max_x > min_x and max_y > min_y
+
     bb = [t.bounding_box() for t in translated]
-    for (i, bb_i) in enumerate(bb):
+    for i, bb_i in enumerate(bb):
-        for (j, bb_j) in enumerate(bb[i+1:]):
+        for j, bb_j in enumerate(bb[i + 1 :]):
-            assert not _overlapping(bb_i, bb_j), f"Objects at indexes {i} and {j} overlap!"
+            assert not _overlapping(
+                bb_i, bb_j
+            ), f"Objects at indexes {i} and {j} overlap!"
     return translated

src/build123d/persistence.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 # pylint has trouble with the OCP imports
 # pylint: disable=no-name-in-module, import-error
 

src/build123d/topology.py

@@ -563,9 +563,9 @@ class Mixin1D:
 
             for line in all_lines:
                 num_points = 2 if line.geom_type == GeomType.LINE else 8
-                points.extend([
+                points.extend(
-                    line.position_at(i / (num_points - 1)) for i in range(num_points)
+                    [line.position_at(i / (num_points - 1)) for i in range(num_points)]
-                ])
+                )
             points = list(set(points))  # unique points
             extreme_areas = {}
             for subset in combinations(points, 3):
@@ -2068,9 +2068,9 @@ class Shape(NodeMixin):
 
     def vertices(self) -> ShapeList[Vertex]:
         """vertices - all the vertices in this Shape"""
-        vertex_list = ShapeList([
+        vertex_list = ShapeList(
-            Vertex(downcast(i)) for i in self._entities(Vertex.__name__)
+            [Vertex(downcast(i)) for i in self._entities(Vertex.__name__)]
-        ])
+        )
         for vertex in vertex_list:
             vertex.topo_parent = self
         return vertex_list
@@ -2085,11 +2085,13 @@ class Shape(NodeMixin):
 
     def edges(self) -> ShapeList[Edge]:
         """edges - all the edges in this Shape"""
-        edge_list = ShapeList([
+        edge_list = ShapeList(
+            [
                 Edge(i)
                 for i in self._entities(Edge.__name__)
                 if not BRep_Tool.Degenerated_s(TopoDS.Edge_s(i))
-        ])
+            ]
+        )
         for edge in edge_list:
             edge.topo_parent = self
         return edge_list
@@ -2637,10 +2639,12 @@ class Shape(NodeMixin):
 
             distance = axis.position.to_pnt().SquareDistance(inter_pt)
 
-            faces_dist.append((
+            faces_dist.append(
+                (
                     intersect_maker.Face(),
                     abs(distance),
-            ))  # will sort all intersected faces by distance whatever the direction is
+                )
+            )  # will sort all intersected faces by distance whatever the direction is
 
             intersect_maker.Next()
 
@@ -2950,11 +2954,13 @@ class Shape(NodeMixin):
             inter_pt = intersect_maker.Pnt()
             # Calculate distance along axis
             distance = axis.to_plane().to_local_coords(Vector(inter_pt)).Z
-            intersections.append((
+            intersections.append(
+                (
                     Face(intersect_maker.Face()),
                     Vector(inter_pt),
                     distance,
-            ))
+                )
+            )
             intersect_maker.Next()
 
         intersections.sort(key=lambda x: x[2])
@@ -3713,12 +3719,12 @@ class GroupBy(Generic[T, K]):
 
     def _repr_pretty_(self, p, cycle=False):
         if cycle:
-            p.text('(...)')
+            p.text("(...)")
         else:
-            with p.group(1, '[', ']'):
+            with p.group(1, "[", "]"):
                 for idx, item in enumerate(self):
                     if idx:
-                        p.text(',')
+                        p.text(",")
                         p.breakable()
                     p.pretty(item)
 
@@ -3807,7 +3813,8 @@ class Compound(Mixin3D, Shape):
                 ) * (7 - l_a)
 
         unknown_args = ", ".join(
-            set(kwargs.keys()).difference([
+            set(kwargs.keys()).difference(
+                [
                     "shapes",
                     "obj",
                     "label",
@@ -3816,7 +3823,8 @@ class Compound(Mixin3D, Shape):
                     "joints",
                     "parent",
                     "children",
-            ])
+                ]
+            )
         )
         if unknown_args:
             raise ValueError(f"Unexpected argument(s) {unknown_args}")
@@ -3939,9 +3947,9 @@ class Compound(Mixin3D, Shape):
         """Method call after detaching from `parent`."""
         logger.debug("Removing parent of %s (%s)", self.label, parent.label)
         if parent.children:
-            parent.wrapped = Compound._make_compound([
+            parent.wrapped = Compound._make_compound(
-                c.wrapped for c in parent.children
+                [c.wrapped for c in parent.children]
-            ])
+            )
         else:
             parent.wrapped = None
 
@@ -5162,14 +5170,16 @@ class Face(Shape):
                 )
 
         unknown_args = ", ".join(
-            set(kwargs.keys()).difference([
+            set(kwargs.keys()).difference(
+                [
                     "outer_wire",
                     "inner_wires",
                     "obj",
                     "label",
                     "color",
                     "parent",
-            ])
+                ]
+            )
         )
         if unknown_args:
             raise ValueError(f"Unexpected argument(s) {unknown_args}")
@@ -5233,16 +5243,18 @@ class Face(Shape):
                 if len(flat_face_edges) == 4:
                     edge_pairs = []
                     for vertex in flat_face_vertices:
-                        edge_pairs.append([
+                        edge_pairs.append(
-                            e for e in flat_face_edges if vertex in e.vertices()
+                            [e for e in flat_face_edges if vertex in e.vertices()]
-                        ])
+                        )
                         edge_pair_directions = [
                             [edge.tangent_at(0) for edge in pair] for pair in edge_pairs
                         ]
-                    if all([
+                    if all(
+                        [
                             edge_directions[0].get_angle(edge_directions[1]) == 90
                             for edge_directions in edge_pair_directions
-                    ]):
+                        ]
+                    ):
                         result = "RECTANGLE"
                         if len(flat_face_edges.group_by(SortBy.LENGTH)) == 1:
                             result = "SQUARE"
@@ -5721,9 +5733,9 @@ class Face(Shape):
         )
         if isinstance(exterior, Wire):
             outside_edges = exterior.edges()
-        elif isinstance(exterior, Iterable) and all([
+        elif isinstance(exterior, Iterable) and all(
-            isinstance(o, Edge) for o in exterior
+            [isinstance(o, Edge) for o in exterior]
-        ]):
+        ):
             outside_edges = exterior
         else:
             raise ValueError("exterior must be a Wire or list of Edges")
@@ -6104,14 +6116,16 @@ class Shell(Shape):
                 faces, label, color, parent = args[:4] + (None,) * (4 - l_a)
 
         unknown_args = ", ".join(
-            set(kwargs.keys()).difference([
+            set(kwargs.keys()).difference(
+                [
                     "face",
                     "faces",
                     "obj",
                     "label",
                     "color",
                     "parent",
-            ])
+                ]
+            )
         )
         if unknown_args:
             raise ValueError(f"Unexpected argument(s) {unknown_args}")
@@ -6246,7 +6260,8 @@ class Solid(Mixin3D, Shape):
                 )
 
         unknown_args = ", ".join(
-            set(kwargs.keys()).difference([
+            set(kwargs.keys()).difference(
+                [
                     "shell",
                     "obj",
                     "label",
@@ -6254,7 +6269,8 @@ class Solid(Mixin3D, Shape):
                     "material",
                     "joints",
                     "parent",
-            ])
+                ]
+            )
         )
         if unknown_args:
             raise ValueError(f"Unexpected argument(s) {unknown_args}")
@@ -6673,9 +6689,9 @@ class Solid(Mixin3D, Shape):
 
         # make an auxiliary spine
         pitch = 360.0 / angle * normal.length
-        aux_spine_w = Wire([
+        aux_spine_w = Wire(
-            Edge.make_helix(pitch, normal.length, 1, center=center, normal=normal)
+            [Edge.make_helix(pitch, normal.length, 1, center=center, normal=normal)]
-        ]).wrapped
+        ).wrapped
 
         # extrude the outer wire
         outer_solid = extrude_aux_spine(
@@ -7270,7 +7286,8 @@ class Wire(Mixin1D, Shape):
                 edges, sequenced, label, color, parent = args[:5] + (None,) * (5 - l_a)
 
         unknown_args = ", ".join(
-            set(kwargs.keys()).difference([
+            set(kwargs.keys()).difference(
+                [
                     "curve",
                     "wire",
                     "edge",
@@ -7280,7 +7297,8 @@ class Wire(Mixin1D, Shape):
                     "label",
                     "color",
                     "parent",
-            ])
+                ]
+            )
         )
         if unknown_args:
             raise ValueError(f"Unexpected argument(s) {unknown_args}")
@@ -7492,10 +7510,12 @@ class Wire(Mixin1D, Shape):
         # Select the wire containing the start and end points
         wire_segments = edges_to_wires(modified_edges + unmodified_edges)
         trimmed_wire = filter(
-            lambda w: all([
+            lambda w: all(
+                [
                     w.distance_to(p) <= TOLERANCE
                     for p in [trim_start_point, trim_end_point]
-            ]),
+                ]
+            ),
             wire_segments,
         )
         try:
@@ -7833,10 +7853,12 @@ class Wire(Mixin1D, Shape):
                     trim_points[edge1] = [simplice[1]]
                 else:
                     trim_points[edge1].append(simplice[1])
-                connecting_edge_data.append((
+                connecting_edge_data.append(
+                    (
                         (edge0, points_lookup[simplice[0]][1], simplice[0]),
                         (edge1, points_lookup[simplice[1]][1], simplice[1]),
-                ))
+                    )
+                )
             # Look for connecting edges within an edge
             elif abs(simplice[0] - simplice[1]) != 1:
                 start_pnt = min(simplice.tolist())
@@ -7845,10 +7867,12 @@ class Wire(Mixin1D, Shape):
                     trim_points[edge0] = [start_pnt, end_pnt]
                 else:
                     trim_points[edge0].extend([start_pnt, end_pnt])
-                connecting_edge_data.append((
+                connecting_edge_data.append(
+                    (
                         (edge0, points_lookup[start_pnt][1], start_pnt),
                         (edge0, points_lookup[end_pnt][1], end_pnt),
-                ))
+                    )
+                )
 
         trim_data = {}
         for edge, points in trim_points.items():
@@ -7956,15 +7980,19 @@ class Wire(Mixin1D, Shape):
                         output_wire_center - planar_wire_center
                     ).normalized()
                     if output_wire_direction.dot(direction_vector) >= 0:
-                        output_wires_distances.append((
+                        output_wires_distances.append(
+                            (
                                 output_wire,
                                 (output_wire_center - planar_wire_center).length,
-                        ))
+                            )
+                        )
                 else:
-                    output_wires_distances.append((
+                    output_wires_distances.append(
+                        (
                             output_wire,
                             (output_wire_center - center_point).length,
-                    ))
+                        )
+                    )
 
             output_wires_distances.sort(key=lambda x: x[1])
             logger.debug(

src/build123d/version.py

@@ -1,6 +1,7 @@
 """
 Export a version string.
 """
+
 try:
     try:
         from ._dev.scm_version import version  # pylint: disable=unused-import

tests/test_build_common.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import unittest
 from math import pi
 from build123d import *

tests/test_build_enums.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import unittest
 from build123d import *
 

tests/test_build_generic.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import unittest
 from math import pi, sqrt
 from build123d import *

tests/test_build_line.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import unittest
 from math import sqrt, pi
 from build123d import *

tests/test_build_part.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import unittest
 from math import pi, sin
 from build123d import *
@@ -470,9 +471,7 @@ class TestThicken(unittest.TestCase):
 
         non_planar = Sphere(1).faces()[0]
         outer_sphere = thicken(non_planar, amount=0.1)
-        self.assertAlmostEqual(
+        self.assertAlmostEqual(outer_sphere.volume, (4 / 3) * pi * (1.1**3 - 1**3), 5)
-            outer_sphere.volume, (4 / 3) * pi * (1.1**3 - 1**3), 5
-        )
 
 
 class TestTorus(unittest.TestCase):

tests/test_direct_api.py

@@ -3008,7 +3008,9 @@ class TestShapeList(DirectApiTestCase):
             " [<build123d.topology.Edge object at 0x000001277FC86F90>,"
             " <build123d.topology.Edge object at 0x000001277F6E1CD0>]]"
         )
-        self.assertDunderReprEqual(repr(nonagon.edges().group_by(Axis.X)),expected_repr)
+        self.assertDunderReprEqual(
+            repr(nonagon.edges().group_by(Axis.X)), expected_repr
+        )
 
         f = io.StringIO()
         p = pretty.PrettyPrinter(f)

tests/test_drafting.py

@@ -25,6 +25,7 @@ license:
     limitations under the License.
 
 """
+
 import math
 import unittest
 from datetime import date
@@ -101,7 +102,6 @@ def create_test_sketch() -> tuple[Sketch, Sketch, Sketch]:
 
 
 class TestClassInstantiation(unittest.TestCase):
-
     """Test Draft class instantiation"""
 
     def test_draft_instantiation(self):

tests/test_joints.py

@@ -26,6 +26,7 @@ license:
     limitations under the License.
 
 """
+
 import copy
 import unittest
 

tests/test_pack.py

@@ -7,6 +7,7 @@ date: November 9th 2023
 
 desc: Unit tests for the build123d pack module
 """
+
 import operator
 import random
 import unittest
@@ -14,8 +15,10 @@ from functools import reduce
 
 from build123d import *
 
+
 class TestPack(unittest.TestCase):
     """Tests for the pack helper."""
+
     def test_simple(self):
         """Test pack with hand-picked data against expected output."""
         packed = pack([Box(10, 2, 1), Box(1, 5, 1), Box(1, 5, 1)], padding=1)
@@ -27,32 +30,39 @@ class TestPack(unittest.TestCase):
             "[bbox: 0.0 <= x <= 10.0, 0.0 <= y <= 2.0, -0.5 <= z <= 0.5,"
             " bbox: 0.0 <= x <= 1.0, 3.0 <= y <= 8.0, -0.5 <= z <= 0.5,"
             " bbox: 2.0 <= x <= 3.0, 3.0 <= y <= 8.0, -0.5 <= z <= 0.5]",
-            str([p.bounding_box() for p in packed]))
+            str([p.bounding_box() for p in packed]),
+        )
 
     def test_random_boxes(self):
         """Test pack with larger (and randomized) inputs."""
         random.seed(123456)
         # 50 is an arbitrary number that is large enough to exercise
         # different aspects of the packer while still completing quickly.
-        test_boxes = [Box(random.randint(1, 20), random.randint(1, 20), 1)
+        test_boxes = [
-                      for _ in range(50)]
+            Box(random.randint(1, 20), random.randint(1, 20), 1) for _ in range(50)
+        ]
         # Not raising in this call shows successfull non-overlap.
         packed = pack(test_boxes, 1)
         self.assertEqual(
             "bbox: 0.0 <= x <= 94.0, 0.0 <= y <= 86.0, -0.5 <= z <= 0.5",
-            str((Part() + packed).bounding_box()))
+            str((Part() + packed).bounding_box()),
+        )
 
     def test_random_slots(self):
         """Test pack for 2D objects."""
         random.seed(123456)
         # 50 is an arbitrary number that is large enough to exercise
         # different aspects of the packer while still completing quickly.
-        inputs = [SlotOverall(random.randint(1,20), random.randint(1,20)) for _ in range(50)]
+        inputs = [
+            SlotOverall(random.randint(1, 20), random.randint(1, 20)) for _ in range(50)
+        ]
         # Not raising in this call shows successfull non-overlap.
         packed = pack(inputs, 1)
         self.assertEqual(
             "bbox: 0.0 <= x <= 124.0, 0.0 <= y <= 105.0, 0.0 <= z <= 0.0",
-            str((Sketch() + packed).bounding_box()))
+            str((Sketch() + packed).bounding_box()),
+        )
+
 
 if __name__ == "__main__":
     unittest.main()