import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,11))
r=w0.sketch().segment((-37,-43),(-21,-43)).segment((-21,-45)).segment((7,-45)).segment((7,-43)).segment((22,-43)).segment((22,-19)).segment((7,-19)).segment((7,-17)).segment((-21,-17)).segment((-21,-19)).segment((-37,-19)).close().assemble().push([(-7.5,-31)]).rect(25,4,mode='s').finalize().extrude(-23).union(w0.sketch().push([(-29,24)]).circle(21).reset().face(w0.sketch().segment((25,-19),(39,-19)).segment((39,-16)).arc((30,20),(25,-17)).close().assemble()).finalize().extrude(-12))