import cadquery as cq
w0=cq.Workplane('YZ',origin=(21,0,0))
r=w0.sketch().segment((-50,45),(-47,-5)).segment((-3,-3)).segment((6,-3)).segment((6,-26)).segment((20,-26)).segment((20,-3)).segment((27,-3)).segment((27,-1)).segment((42,-1)).segment((39,50)).segment((-5,48)).segment((-36,48)).segment((-36,46)).close().assemble().finalize().extrude(-43).union(w0.sketch().segment((16,-36),(26,-50)).segment((43,-38)).segment((30,-20)).segment((50,-20)).segment((50,-5)).segment((23,-5)).segment((23,-36)).close().assemble().finalize().extrude(-26))