import cadquery as cq
w0=cq.Workplane('YZ',origin=(-7,0,0))
r=w0.sketch().segment((-40,26),(-19,26)).segment((-13,12)).segment((0,18)).segment((-10,41)).segment((-23,36)).segment((-19,27)).segment((-40,27)).close().assemble().finalize().extrude(-28).union(w0.sketch().push([(-34,-25)]).circle(16).reset().face(w0.sketch().segment((2,11),(9,11)).segment((9,0)).segment((43,0)).segment((43,11)).segment((50,11)).segment((50,26)).segment((43,26)).segment((43,37)).segment((25,37)).segment((27,29)).segment((22,27)).segment((19,37)).segment((9,37)).segment((9,26)).segment((2,26)).close().assemble()).finalize().extrude(43))