import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-15,0))
r=w0.workplane(offset=1/2).moveTo(-22,31).cylinder(1,19).union(w0.sketch().segment((21,-25),(39,-50)).segment((41,-48)).segment((24,-24)).arc((4,9),(21,-25)).assemble().finalize().extrude(30))