import cadquery as cq
w0=cq.Workplane('YZ',origin=(-15,0,0))
r=w0.sketch().segment((-37,-5),(-26,-5)).segment((-26,5)).segment((-35,5)).segment((-36,30)).segment((-26,31)).segment((-26,50)).segment((-37,50)).close().assemble().push([(22,-35)]).circle(15).finalize().extrude(30)