import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,18,0))
w1=cq.Workplane('YZ',origin=(39,0,0))
r=w0.sketch().segment((-100,-41),(-72,-41)).arc((-57,-49),(-40,-49)).segment((-22,-54)).segment((-6,4)).segment((-22,9)).segment((-22,43)).segment((-100,43)).close().assemble().reset().face(w0.sketch().segment((16,-27),(17,-27)).segment((17,8)).segment((96,8)).segment((96,-27)).segment((100,-27)).segment((100,54)).segment((16,54)).close().assemble()).finalize().extrude(26).union(w1.workplane(offset=-21/2).moveTo(-43.5,-19.5).box(1,35,21))