import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-31,0))
w1=cq.Workplane('ZX',origin=(0,-22,0))
r=w0.workplane(offset=-20/2).moveTo(-44,25).cylinder(20,56).union(w1.sketch().arc((-11,-46),(94,-48),(31,35)).arc((26,43),(20,51)).segment((58,51)).segment((58,80)).segment((-10,80)).segment((-10,68)).arc((-82,11),(-11,-46)).assemble().reset().face(w1.sketch().arc((15,55),(16,55),(17,54)).segment((32,54)).segment((32,77)).segment((15,77)).close().assemble(),mode='s').reset().face(w1.sketch().arc((18,-31),(65,-34),(35,3)).arc((29,-15),(18,-31)).assemble(),mode='s').finalize().extrude(74))