import cadquery as cq
w0=cq.Workplane('YZ',origin=(-11,0,0))
r=w0.sketch().segment((-50,-27),(-28,-27)).segment((-27,-27)).segment((50,-27)).segment((50,27)).segment((28,27)).segment((27,27)).segment((-50,27)).close().assemble().circle(6,mode='s').finalize().extrude(22)