import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,8,0))
r=w0.sketch().segment((-37,-7),(-8,15)).arc((-50,-4),(-15,-34)).close().assemble().reset().face(w0.sketch().segment((5,20),(30,-10)).arc((45,27),(5,20)).assemble()).finalize().extrude(-17)