import cadquery as cq
w0=cq.Workplane('YZ',origin=(-12,0,0))
w1=cq.Workplane('YZ',origin=(-8,0,0))
r=w0.workplane(offset=8/2).moveTo(12.5,26.5).box(25,47,8).union(w0.sketch().arc((-15,-3),(-13,-5),(-14,-2)).arc((-14,-3),(-15,-3)).assemble().finalize().extrude(8)).union(w1.workplane(offset=20/2).moveTo(-12,-37).cylinder(20,13))