import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-7,0))
r=w0.sketch().segment((-17,-34),(16,-50)).segment((44,3)).segment((11,21)).close().assemble().push([(37,39)]).circle(11).finalize().extrude(-11).union(w0.sketch().segment((-48,-1),(-31,-1)).arc((-19,-9),(-8,-1)).segment((9,-1)).segment((9,7)).segment((-8,7)).arc((-19,15),(-31,7)).segment((-48,7)).close().assemble().finalize().extrude(25))