import cadquery as cq
w0=cq.Workplane('YZ',origin=(-3,0,0))
w1=cq.Workplane('YZ',origin=(-36,0,0))
r=w0.sketch().circle(36).circle(9,mode='s').finalize().extrude(8).union(w1.sketch().circle(50).rect(30,26,mode='s').finalize().extrude(72))