import cadquery as cq
w0=cq.Workplane('YZ',origin=(19,0,0))
w1=cq.Workplane('ZX',origin=(0,-11,0))
r=w0.sketch().segment((-50,-3),(-35,-3)).segment((-37,-7)).segment((-44,-4)).segment((-48,-11)).segment((-40,-15)).segment((-45,-25)).segment((-33,-31)).segment((-28,-21)).segment((-26,-22)).segment((-22,-15)).segment((-25,-14)).segment((-20,-3)).segment((-2,-3)).segment((-2,4)).segment((-17,4)).segment((-7,26)).segment((-19,31)).segment((-31,4)).segment((-50,4)).close().assemble().finalize().extrude(-48).union(w1.sketch().segment((-31,-9),(-4,-9)).segment((-4,4)).arc((-7,10),(-4,16)).segment((-4,29)).segment((-31,29)).close().assemble().finalize().extrude(61))