import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-13,0))
r=w0.sketch().push([(-2.5,30)]).rect(43,30).push([(23,-28.5)]).rect(18,43).finalize().extrude(19).union(w0.sketch().push([(-14,-20.5)]).rect(38,33).push([(18,35)]).circle(15).finalize().extrude(26))