import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,13,0))
r=w0.sketch().push([(27,0)]).circle(23).circle(14,mode='s').finalize().extrude(-27).union(w0.sketch().push([(-31,-3)]).circle(19).circle(9,mode='s').finalize().extrude(-22))