import cadquery as cq
w0=cq.Workplane('YZ',origin=(11,0,0))
r=w0.sketch().segment((-50,-35),(-21,-35)).segment((-21,-28)).segment((-24,-28)).segment((-24,-7)).segment((-8,-7)).segment((-8,5)).segment((-21,5)).segment((-21,30)).segment((-50,30)).close().assemble().push([(38,17)]).rect(24,36).push([(32,28.5)]).rect(8,7,mode='s').finalize().extrude(-22)