import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,40))
w1=cq.Workplane('ZX',origin=(0,29,0))
r=w0.sketch().rect(112,90).reset().face(w0.sketch().segment((-36,-7),(15,-34)).segment((36,7)).segment((-15,34)).close().assemble(),mode='s').finalize().extrude(60).union(w1.sketch().segment((-100,-27),(-99,-27)).arc((-99,-24),(-100,-21)).close().assemble().finalize().extrude(-20))