import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,50))
w1=cq.Workplane('ZX',origin=(0,23,0))
r=w0.workplane(offset=-74/2).box(60,14,74).union(w0.sketch().circle(23).rect(16,18,mode='s').finalize().extrude(-66)).union(w1.workplane(offset=-29/2).moveTo(-45,20).cylinder(29,5))