import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-19,0))
r=w0.workplane(offset=-9/2).moveTo(0,-5).cylinder(9,45).union(w0.sketch().segment((2,49),(12,26)).segment((41,37)).segment((35,50)).segment((15,34)).close().assemble().finalize().extrude(48))