import cadquery as cq
w0=cq.Workplane('YZ',origin=(-24,0,0))
r=w0.sketch().push([(-8,43)]).rect(48,14).push([(16,-34)]).circle(16).push([(5,-31)]).circle(5,mode='s').finalize().extrude(19).union(w0.sketch().segment((21,4),(28,0)).segment((29,2)).segment((21,6)).close().assemble().finalize().extrude(48))