import cadquery as cq
w0=cq.Workplane('YZ',origin=(13,0,0))
r=w0.workplane(offset=-26/2).moveTo(-7,-25.5).box(18,49,26).union(w0.workplane(offset=-25/2).moveTo(-22,33).cylinder(25,17)).union(w0.workplane(offset=-1/2).moveTo(38,10).cylinder(1,1))