import cadquery as cq
w0=cq.Workplane('YZ',origin=(20,0,0))
w1=cq.Workplane('YZ',origin=(8,0,0))
r=w0.workplane(offset=-41/2).moveTo(16,2).cylinder(41,34).union(w1.sketch().segment((-49,-24),(-46,-24)).arc((-2,-25),(-20,16)).segment((-20,36)).segment((-49,36)).segment((-49,-3)).arc((-50,-10),(-49,-17)).close().assemble().finalize().extrude(-22))