import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-100))
r=w0.sketch().segment((-86,46),(-65,29)).segment((-42,60)).segment((-62,76)).close().assemble().reset().face(w0.sketch().segment((42,-60),(62,-76)).segment((86,-46)).segment((65,-29)).close().assemble()).finalize().extrude(200)