Builder mode part / sketch names do not propagate

[fpfcmsr]

when using

with BuildPart() as partName:
with BuildSketch() as sketchName:

the following do not work:

partName.label
sketchName.label
sketchName.sketch.label

code to test:

from build123d import *

# Testing BuildPart()
with BuildPart() as box:
    Box(10, 10, 10)

with BuildPart() as sphere:
    Sphere(7)


# BuildPart() no renaming
box.label = "box1"
sphere.part.label = "sphere1"
assembly1 = Compound(
    label="assembly1",
    children=[box.part, sphere.part]
)

print(assembly1.show_topology())


# BuildPart() with renaming 
child_box = box.part
child_box.label = "box2"
child_sphere = sphere.part
child_sphere.label = "sphere2"
assembly2 = Compound(
    label="assembly2",
    children=[child_box, child_sphere]
)

print(assembly2.show_topology())




# Testing BuildSketch() 
with BuildSketch() as square:
    Rectangle(
        10, 10
    )

with BuildSketch() as circle:
    Circle(
        7
    )


# BuildSketch() no renaming
square.label = "square3"
circle.sketch.label = "circle3" 
assembly3 = Compound(
    label="assembly3",
    children=[square.sketch, circle.sketch]
)

print(assembly3.show_topology())


# BuildSketch() with renaming
child_square = square.sketch
child_square.label = "square4" 
child_circle = circle.sketch
child_circle.label = "circle4"
assembly4 = Compound(
    label="assembly4",
    children=[child_square, child_circle]
)

print(assembly4.show_topology())

output:

assembly1   Compound at 0x7f7a69a288a0, Location((0, 0, 0), (0, 0, 0))
├──         Part     at 0x7f7a69a2c440, Location((0, 0, 0), (0, 0, 0))
└── sphere1 Part     at 0x7f7a69977390, Location((0, 0, 0), (0, 0, 0))

assembly2   Compound at 0x7f7a69c6a690, Location((0, 0, 0), (0, 0, 0))
├── box2    Part     at 0x7f7a69a2c440, Location((0, 0, 0), (0, 0, 0))
└── sphere2 Part     at 0x7f7a69977390, Location((0, 0, 0), (0, 0, 0))

assembly3 Compound at 0x7f7a69a12350, Location((0, 0, 0), (0, 0, 0))
├──       Sketch   at 0x7f7a69c6a330, Location((0, 0, 0), (0, 0, 0))
└──       Sketch   at 0x7f7a699c5150, Location((0, 0, 0), (0, 0, 0))

assembly4   Compound at 0x7f7a6999ce90, Location((0, 0, 0), (0, 0, 0))
├── square4 Sketch   at 0x7f7a699e4c50, Location((0, 0, 0), (0, 0, 0))
└── circle4 Sketch   at 0x7f7a699d96d0, Location((0, 0, 0), (0, 0, 0))