import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,5,0))
r=w0.sketch().arc((32,-4),(33,-4),(33,-3)).segment((32,-3)).close().assemble().finalize().extrude(-10).union(w0.sketch().arc((-15,-7),(-15,-50),(-1,-9)).arc((2,49),(-15,-7)).assemble().finalize().extrude(-8))