import cadquery as cq
w0=cq.Workplane('YZ',origin=(17,0,0))
r=w0.workplane(offset=-44/2).moveTo(-13,32).cylinder(44,18).union(w0.sketch().segment((-10,-41),(-8,-41)).segment((-8,-50)).segment((28,-50)).segment((28,-41)).segment((31,-41)).segment((31,-24)).segment((28,-24)).segment((28,-14)).segment((-8,-14)).segment((-8,-24)).segment((-10,-24)).close().assemble().finalize().extrude(-3)).union(w0.workplane(offset=10/2).moveTo(5,31).cylinder(10,9))