import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,23,0))
r=w0.sketch().segment((-50,-44),(24,-44)).segment((24,-6)).arc((11,44),(-35,22)).segment((-50,22)).close().assemble().finalize().extrude(-59).union(w0.sketch().segment((37,-47),(50,-46)).segment((50,-42)).segment((37,-43)).close().assemble().finalize().extrude(12))