import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,10,0))
r=w0.sketch().arc((37,-38),(46,-30),(41,-20)).segment((50,9)).segment((46,10)).segment((37,-18)).close().assemble().finalize().extrude(-26).union(w0.sketch().segment((-50,-36),(18,-36)).segment((18,-17)).arc((2,6),(18,28)).segment((18,38)).segment((-50,38)).close().assemble().finalize().extrude(5))