import cadquery as cq
w0=cq.Workplane('YZ',origin=(15,0,0))
r=w0.sketch().push([(-21.5,-20.5)]).rect(5,59).push([(-21,-21)]).circle(2,mode='s').finalize().extrude(-44).union(w0.sketch().push([(-26,-13)]).circle(6).push([(31,49)]).circle(1).finalize().extrude(13))