import cadquery as cq
w0=cq.Workplane('YZ',origin=(-7,0,0))
r=w0.sketch().segment((-37,-12),(-30,-39)).segment((-25,-38)).segment((-25,-41)).segment((0,-41)).segment((0,-30)).segment((5,-29)).segment((1,-16)).arc((8,-1),(3,14)).arc((31,44),(1,16)).arc((-28,17),(-34,-11)).close().assemble().reset().face(w0.sketch().segment((0,-13),(1,-15)).segment((1,-13)).close().assemble(),mode='s').finalize().extrude(4).union(w0.sketch().push([(-10,-34)]).circle(16).circle(10,mode='s').finalize().extrude(15))