import cadquery as cq
w0=cq.Workplane('YZ',origin=(17,0,0))
r=w0.sketch().push([(-19,19)]).rect(62,44).reset().face(w0.sketch().segment((-33,16),(-31,13)).segment((-31,18)).close().assemble(),mode='s').reset().face(w0.sketch().segment((-8,20),(-5,23)).segment((-8,26)).close().assemble(),mode='s').finalize().extrude(-35).union(w0.sketch().segment((1,-23),(13,-41)).segment((50,-18)).segment((39,0)).close().assemble().finalize().extrude(-28))