import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-4,0))
w1=cq.Workplane('YZ',origin=(16,0,0))
r=w0.sketch().arc((24,17),(32,-21),(30,18)).segment((31,19)).segment((25,21)).close().assemble().push([(30,-2)]).circle(10,mode='s').finalize().extrude(-28).union(w0.sketch().segment((-50,1),(-34,-16)).segment((-19,-2)).segment((-35,15)).close().assemble().finalize().extrude(37)).union(w1.sketch().arc((-21,-11),(-19,-15),(-15,-17)).segment((-15,-20)).segment((-9,-20)).segment((-9,-17)).arc((-6,-15),(-3,-12)).arc((-10,19),(-21,-11)).assemble().finalize().extrude(-7))